INCLUDE i286a.inc
INCLUDE i286aea.inc
INCLUDE i286aalu.inc
INCLUDE i286aop.inc
INCLUDE i286apic.inc
IMPORT i286core
IMPORT _szpcflag8
IMPORT i286a_localint
IMPORT i286a_ea
IMPORT i286a_lea
IMPORT i286a_a
IMPORT i286_memoryread
IMPORT i286_memoryread_w
IMPORT i286_memorywrite
IMPORT i286_memorywrite_w
IMPORT iocore_inp8
IMPORT iocore_inp16
IMPORT iocore_out8
IMPORT iocore_out16
IMPORT biosfunc
IMPORT dmac
IMPORT pic
IMPORT extirq_pop
IMPORT i286a_cts
IMPORT i286aop80
IMPORT i286aop81
IMPORT i286aop83
IMPORT i286asft8_1
IMPORT i286asft16_1
IMPORT i286asft8_cl
IMPORT i286asft8_d8
IMPORT i286asft16_cl
IMPORT i286asft16_d8
IMPORT i286aopf6
IMPORT i286aopf7
IMPORT i286aopfe
IMPORT i286aopff
IMPORT i286a_rep_insb
IMPORT i286a_rep_insw
IMPORT i286a_rep_outsb
IMPORT i286a_rep_outsw
IMPORT i286a_rep_movsb
IMPORT i286a_rep_movsw
IMPORT i286a_rep_lodsb
IMPORT i286a_rep_lodsw
IMPORT i286a_rep_stosb
IMPORT i286a_rep_stosw
IMPORT i286a_repe_cmpsb
IMPORT i286a_repe_cmpsw
IMPORT i286a_repne_cmpsb
IMPORT i286a_repne_cmpsw
IMPORT i286a_repe_scasb
IMPORT i286a_repe_scasw
IMPORT i286a_repne_scasb
IMPORT i286a_repne_scasw
EXPORT i286a
EXPORT i286a_step
EXPORT optbl1
AREA .text, CODE, READONLY
add_ea_r8 OP_EA_R8 ADD8, #2, #7
add_ea_r16 OP_EA_R16 ADD16, #2, #7
add_r8_ea OP_R8_EA ADD8, #2, #7
add_r16_ea OP_R16_EA ADD16, #2, #7
add_al_d8 OP_AL_D8 ADD8, #3
add_ax_d16 OP_AX_D16 ADD16, #3
push_es REGPUSH #CPU_ES, #3
pop_es SEGPOP #CPU_ES, #CPU_ES_BASE, #5
or_ea_r8 OP_EA_R8 OR8, #2, #7
or_ea_r16 OP_EA_R16 OR16, #2, #7
or_r8_ea OP_R8_EA OR8, #2, #7
or_r16_ea OP_R16_EA OR16, #2, #7
or_al_d8 OP_AL_D8 OR8, #3
or_ax_d16 OP_AX_D16 OR16, #3
push_cs REGPUSH #CPU_CS, #3
; ope0f
adc_ea_r8 OP_EA_R8 ADC8, #2, #7
adc_ea_r16 OP_EA_R16 ADC16, #2, #7
adc_r8_ea OP_R8_EA ADC8, #2, #7
adc_r16_ea OP_R16_EA ADC16, #2, #7
adc_al_d8 OP_AL_D8 ADC8, #3
adc_ax_d16 OP_AX_D16 ADC16, #3
push_ss REGPUSH #CPU_SS, #3
pop_ss SEGPOPFIX #CPU_SS, #CPU_SS_BASE, #CPU_SS_FIX, #5
sbb_ea_r8 OP_EA_R8 SBB8, #2, #7
sbb_ea_r16 OP_EA_R16 SBB16, #2, #7
sbb_r8_ea OP_R8_EA SBB8, #2, #7
sbb_r16_ea OP_R16_EA SBB16, #2, #7
sbb_al_d8 OP_AL_D8 SBB8, #3
sbb_ax_d16 OP_AX_D16 SBB16, #3
push_ds REGPUSH #CPU_DS, #3
pop_ds SEGPOPFIX #CPU_DS, #CPU_DS_BASE, #CPU_DS_FIX, #5
and_ea_r8 OP_EA_R8 AND8, #2, #7
and_ea_r16 OP_EA_R16 AND16, #2, #7
and_r8_ea OP_R8_EA AND8, #2, #7
and_r16_ea OP_R16_EA AND16, #2, #7
and_al_d8 OP_AL_D8 AND8, #3
and_ax_d16 OP_AX_D16 AND16, #3
; segprefix_es !
; daa *
sub_ea_r8 OP_EA_R8 SUB8, #2, #7
sub_ea_r16 OP_EA_R16 SUB16, #2, #7
sub_r8_ea OP_R8_EA SUB8, #2, #7
sub_r16_ea OP_R16_EA SUB16, #2, #7
sub_al_d8 OP_AL_D8 SUB8, #3
sub_ax_d16 OP_AX_D16 SUB16, #3
; segprefix_cs !
; das *
xor_ea_r8 OP_EA_R8 XOR8, #2, #7
xor_ea_r16 OP_EA_R16 XOR16, #2, #7
xor_r8_ea OP_R8_EA XOR8, #2, #7
xor_r16_ea OP_R16_EA XOR16, #2, #7
xor_al_d8 OP_AL_D8 XOR8, #3
xor_ax_d16 OP_AX_D16 XOR16, #3
; segprefix_ss !
; aaa *
cmp_ea_r8 S_EA_R8 SUB8, #2, #7
cmp_ea_r16 S_EA_R16 SUB16, #2, #7
cmp_r8_ea S_R8_EA SUB8, #2, #6
cmp_r16_ea S_R16_EA SUB16, #2, #6
cmp_al_d8 S_AL_D8 SUB8, #3
cmp_ax_d16 S_AX_D16 SUB16, #3
; segprefix_ds !
; aas *
inc_ax OP_INC16 #CPU_AX, #2
inc_cx OP_INC16 #CPU_CX, #2
inc_dx OP_INC16 #CPU_DX, #2
inc_bx OP_INC16 #CPU_BX, #2
inc_sp OP_INC16 #CPU_SP, #2
inc_bp OP_INC16 #CPU_BP, #2
inc_si OP_INC16 #CPU_SI, #2
inc_di OP_INC16 #CPU_DI, #2
dec_ax OP_DEC16 #CPU_AX, #2
dec_cx OP_DEC16 #CPU_CX, #2
dec_dx OP_DEC16 #CPU_DX, #2
dec_bx OP_DEC16 #CPU_BX, #2
dec_sp OP_DEC16 #CPU_SP, #2
dec_bp OP_DEC16 #CPU_BP, #2
dec_si OP_DEC16 #CPU_SI, #2
dec_di OP_DEC16 #CPU_DI, #2
push_ax REGPUSH #CPU_AX, #3
push_cx REGPUSH #CPU_CX, #3
push_dx REGPUSH #CPU_DX, #3
push_bx REGPUSH #CPU_BX, #3
push_sp SP_PUSH #3
push_bp REGPUSH #CPU_BP, #3
push_si REGPUSH #CPU_SI, #3
push_di REGPUSH #CPU_DI, #3
pop_ax REGPOP #CPU_AX, #5
pop_cx REGPOP #CPU_CX, #5
pop_dx REGPOP #CPU_DX, #5
pop_bx REGPOP #CPU_BX, #5
pop_sp SP_POP #5
pop_bp REGPOP #CPU_BP, #5
pop_si REGPOP #CPU_SI, #5
pop_di REGPOP #CPU_DI, #5
; pusha *
; popa *
; bound +
; arpl +
; push_d16 *
; imul_r_ea_d16 +
; push_d8 *
; imul_r_ea_d8 +
; insb *
; insw *
; outsb *
; outsw *
jo_short JMPNE #O_FLAG, #2, #7
jno_short JMPEQ #O_FLAG, #2, #7
jc_short JMPNE #C_FLAG, #2, #7
jnc_short JMPEQ #C_FLAG, #2, #7
jz_short JMPNE #Z_FLAG, #2, #7
jnz_short JMPEQ #Z_FLAG, #2, #7
jna_short JMPNE #(Z_FLAG + C_FLAG), #2, #7
ja_short JMPEQ #(Z_FLAG + C_FLAG), #2, #7
js_short JMPNE #S_FLAG, #2, #7
jns_short JMPEQ #S_FLAG, #2, #7
jp_short JMPNE #P_FLAG, #2, #7
jnp_short JMPEQ #P_FLAG, #2, #7
; jl_short +
; jnl_short +
; jle_short +
; jnle_short +
; calc_ea8_i8 +
; calc_ea16_i16 +
; calc_ea16_i8 +
test_ea_r8 S_EA_R8 AND8, #2, #6
test_ea_r16 S_EA_R16 AND16, #2, #6
; xchg_ea_r8 *
; xchg_ea_r16 *
; mov_ea_r8 *
; mov_ea_r16 *
; mov_r8_ea *
; mov_r16_ea *
; mov_ea_seg +
; lea_r16_ea +
; mov_seg_ea !
; pop_ea *
; nop
xchg_ax_cx XCHG_AX #CPU_CX, #3
xchg_ax_dx XCHG_AX #CPU_DX, #3
xchg_ax_bx XCHG_AX #CPU_BX, #3
xchg_ax_sp XCHG_AX #CPU_SP, #3
xchg_ax_bp XCHG_AX #CPU_BP, #3
xchg_ax_si XCHG_AX #CPU_SI, #3
xchg_ax_di XCHG_AX #CPU_DI, #3
; cbw *
; cwd *
; call_far *
; wait *
; pushf *
; popf !
; sahf *
; lahf *
; mov_al_m8 *
; mov_ax_m16 *
; mov_m8_al *
; mov_m16_ax *
; movsb *
; movsw *
; cmpsb *
; cmpsw *
test_al_d8 S_AL_D8 AND8, #3
test_ax_d16 S_AX_D16 AND16, #3
; stosb *
; stosw *
; lodsb *
; lodsw *
; scasb *
; scasw *
mov_al_imm MOVIMM8 #CPU_AL, #2
mov_cl_imm MOVIMM8 #CPU_CL, #2
mov_dl_imm MOVIMM8 #CPU_DL, #2
mov_bl_imm MOVIMM8 #CPU_BL, #2
mov_ah_imm MOVIMM8 #CPU_AH, #2
mov_ch_imm MOVIMM8 #CPU_CH, #2
mov_dh_imm MOVIMM8 #CPU_DH, #2
mov_bh_imm MOVIMM8 #CPU_BH, #2
mov_ax_imm MOVIMM16 #CPU_AX, #2
mov_cx_imm MOVIMM16 #CPU_CX, #2
mov_dx_imm MOVIMM16 #CPU_DX, #2
mov_bx_imm MOVIMM16 #CPU_BX, #2
mov_sp_imm MOVIMM16 #CPU_SP, #2
mov_bp_imm MOVIMM16 #CPU_BP, #2
mov_si_imm MOVIMM16 #CPU_SI, #2
mov_di_imm MOVIMM16 #CPU_DI, #2
; shift_ea8_d8
; shift_ea16_d8
; ret_near_d16 +
; ret_near +
; les_r16_ea +
; lds_r16_ea +
; mov_ea8_d8 *
; mov_ea16_d16 *
; enter
; leave +
; ret_far_d16 +
; ret_far +
; int_03 +
; int_d8 +
; into +
; iret !
; shift_ea8_1
; shift_ea16_1
; shift_ea8_cl
; shift_ea16_cl
; aam +
; aad *
; setalc *
; xlat *
; esc *
; loopnz *
; loopz *
; loop *
; jcxz *
; in_al_d8 *
; in_ax_d8 *
; out_d8_al *
; out_d8_ax *
; call_near *
; jmp_near *
; jmp_far *
jmp_short JMPS #7
; in_al_dx *
; in_ax_dx *
; out_dx_al *
; out_dx_ax *
; lock *
; repne !
; repe !
; hlt +
; cmc *
; ope0xf6
; ope0xf7
; clc *
; stc *
; cli *
; sti !
; cld *
; std *
; ope0xfe
; ope0xff
; ----
reserved mov r6, #6
sub r8, r8, #(1 << 16)
b i286a_localint
daa ldrb r0, [r9, #CPU_AL]
bic r8, r8, #O_FLAG
CPUWORK #3
eor r2, r0, #&80
tst r8, #A_FLAG
bne daalo2
and r1, r0, #&0f
cmp r1, #10
bcc daahi
orr r8, r8, #A_FLAG
daalo2 add r0, r0, #6
orr r8, r8, r0 lsr #8
and r0, r0, #&ff
daahi tst r8, #C_FLAG
bne daahi2
cmp r0, #&a0
bcc daaflg
orr r8, r8, #C_FLAG
daahi2 add r0, r0, #&60
and r0, r0, #&ff
daaflg strb r0, [r9, #CPU_AL]
ldrb r1, [r10, r0]
bic r8, r8, #(&ff - A_FLAG - C_FLAG)
and r2, r0, r2
orr r8, r1, r8
tst r2, #&80
addne r8, r8, #O_FLAG
mov pc, r11
das CPUWORK #3
ldrb r0, [r9, #CPU_AL]
tst r8, #C_FLAG
bne dashi2
cmp r0, #&9a
bcc daslo
orr r8, r8, #C_FLAG
dashi2 sub r0, r0, #&60
and r0, r0, #&ff
daslo tst r8, #A_FLAG
bne daslo2
and r1, r0, #&0f
cmp r1, #10
bcc dasflg
orr r8, r8, #A_FLAG
daslo2 sub r0, r0, #6
orr r8, r8, r0 lsr #31
and r0, r0, #&ff
dasflg ldrb r1, [r10, r0]
strb r0, [r9, #CPU_AL]
bic r8, r8, #(&ff - A_FLAG - C_FLAG)
orr r8, r1, r8
mov pc, r11
aaa CPUWORK #3
ldrh r0, [r9, #CPU_AX]
tst r8, #A_FLAG
bic r8, r8, #(A_FLAG + C_FLAG)
bne aaa1
and r1, r0, #&f
cmp r1, #10
bcc aaa2
aaa1 orr r8, r8, #(A_FLAG + C_FLAG)
add r0, r0, #6
add r0, r0, #&100
aaa2 bic r0, r0, #&f0
strh r0, [r9, #CPU_AX]
mov pc, r11
aas CPUWORK #3
ldrh r0, [r9, #CPU_AX]
tst r8, #A_FLAG
bic r8, r8, #(A_FLAG + C_FLAG)
bne aas1
and r1, r0, #&f
cmp r1, #10
movcc pc, r11
aas1 orr r8, r8, #(A_FLAG + C_FLAG)
sub r0, r0, #6
sub r0, r0, #&100
strh r0, [r9, #CPU_AX]
mov pc, r11
pusha ldrh r4, [r9, #CPU_SP]
ldr r5, [r9, #CPU_SS_BASE]
CPUWORK #17
mov r6, r4
mov r4, r4 lsl #16
sub r4, r4, #(2 << 16)
ldrh r1, [r9, #CPU_AX]
add r0, r5, r4 lsr #16
bl i286_memorywrite_w
sub r4, r4, #(2 << 16)
ldrh r1, [r9, #CPU_CX]
add r0, r5, r4 lsr #16
bl i286_memorywrite_w
sub r4, r4, #(2 << 16)
ldrh r1, [r9, #CPU_DX]
add r0, r5, r4 lsr #16
bl i286_memorywrite_w
sub r4, r4, #(2 << 16)
ldrh r1, [r9, #CPU_BX]
add r0, r5, r4 lsr #16
bl i286_memorywrite_w
mov r1, r6
sub r4, r4, #(2 << 16)
add r0, r5, r4 lsr #16
bl i286_memorywrite_w
sub r4, r4, #(2 << 16)
ldrh r1, [r9, #CPU_BP]
add r0, r5, r4 lsr #16
bl i286_memorywrite_w
sub r4, r4, #(2 << 16)
ldrh r1, [r9, #CPU_SI]
add r0, r5, r4 lsr #16
bl i286_memorywrite_w
sub r4, r4, #(2 << 16)
ldrh r1, [r9, #CPU_DI]
add r0, r5, r4 lsr #16
bl i286_memorywrite_w
mov r0, r4 lsr #16
strh r0, [r9, #CPU_SP]
mov pc, r11
popa ldrh r4, [r9, #CPU_SP]
ldr r5, [r9, #CPU_SS_BASE]
CPUWORK #19
add r0, r5, r4
mov r4, r4 lsl #16
bl i286_memoryread_w
add r4, r4, #(2 << 16)
strh r0, [r9, #CPU_DI]
add r0, r5, r4 lsr #16
bl i286_memoryread_w
add r4, r4, #(2 << 16)
strh r0, [r9, #CPU_SI]
add r0, r5, r4 lsr #16
bl i286_memoryread_w
add r4, r4, #(4 << 16)
strh r0, [r9, #CPU_BP]
add r0, r5, r4 lsr #16
bl i286_memoryread_w
add r4, r4, #(2 << 16)
strh r0, [r9, #CPU_BX]
add r0, r5, r4 lsr #16
bl i286_memoryread_w
add r4, r4, #(2 << 16)
strh r0, [r9, #CPU_DX]
add r0, r5, r4 lsr #16
bl i286_memoryread_w
add r4, r4, #(2 << 16)
strh r0, [r9, #CPU_CX]
add r0, r5, r4 lsr #16
bl i286_memoryread_w
add r4, r4, #(2 << 16)
strh r0, [r9, #CPU_AX]
mov r0, r4 lsr #16
strh r0, [r9, #CPU_SP]
mov pc, r11
bound GETPC8
cmp r0, #&c0
bcs bndreg
CPUWORK #13
R16DST r0, r12
ldrh r5, [r12, #CPU_REG]
bl i286a_a
add r4, r0, #2
add r0, r0, r6
bl i286_memoryread_w
cmp r5, r0
bcc bndout
bic r4, r4, #(1 << 16)
add r0, r4, r6
bl i286_memoryread_w
cmp r5, r0
movls pc, r11
bndout mov r6, #5
b i286a_localint
bndreg mov r6, #6
sub r8, r8, #(2 << 16)
b i286a_localint
push_d16 CPUWORK #3
GETPC16
ldrh r2, [r9, #CPU_SP]
ldr r3, [r9, #CPU_SS_BASE]
mov r1, r0
subs r2, r2, #2
addcc r2, r2, #&10000
strh r2, [r9, #CPU_SP]
add r0, r2, r3
mov lr, r11
b i286_memorywrite_w
imul_r_ea_d16 REG16EA r5, #21, #24
mov r4, r0, lsl #16
GETPC16
mov r0, r0, lsl #16
mov r4, r4, asr #16
mov r0, r0, asr #16
mul r1, r0, r4
add r12, r1, #&8000
strh r1, [r5, #CPU_REG]
movs r12, r12 lsr #16
biceq r8, r8, #O_FLAG
biceq r8, r8, #C_FLAG
orrne r8, r8, #O_FLAG
orrne r8, r8, #C_FLAG
mov pc, r11
push_d8 CPUWORK #3
GETPC8
ldrh r2, [r9, #CPU_SP]
ldr r3, [r9, #CPU_SS_BASE]
mov r0, r0 lsl #24
subs r2, r2, #2
addcc r2, r2, #&10000
mov r1, r0 asr #24
strh r2, [r9, #CPU_SP]
add r0, r2, r3
mov lr, r11
b i286_memorywrite_w
imul_r_ea_d8 REG16EA r5, #21, #24
mov r4, r0, lsl #16
GETPC8
mov r0, r0, lsl #24
mov r4, r4, asr #16
mov r0, r0, asr #24
mul r1, r0, r4
add r12, r1, #&8000
strh r1, [r5, #CPU_REG]
movs r12, r12 lsr #16
biceq r8, r8, #O_FLAG
biceq r8, r8, #C_FLAG
orrne r8, r8, #O_FLAG
orrne r8, r8, #C_FLAG
mov pc, r11
insb CPUWORK #5
ldrh r0, [r9, #CPU_DX]
CPUSV
bl iocore_inp8
CPULD
ldrh r2, [r9, #CPU_DI]
ldr r3, [r9, #CPU_ES_BASE]
mov r1, r0
add r0, r2, r3
tst r8, #D_FLAG
addeq r2, r2, #1
subne r2, r2, #1
mov lr, r11
strh r2, [r9, #CPU_DI]
b i286_memorywrite
insw CPUWORK #5
ldrh r0, [r9, #CPU_DX]
CPUSV
bl iocore_inp16
CPULD
ldrh r2, [r9, #CPU_DI]
ldr r3, [r9, #CPU_ES_BASE]
mov r1, r0
add r0, r2, r3
tst r8, #D_FLAG
addeq r2, r2, #2
subne r2, r2, #2
mov lr, r11
strh r2, [r9, #CPU_DI]
b i286_memorywrite_w
outsb CPUWORK #3
ldrh r1, [r9, #CPU_SI]
ldr r2, [r9, #CPU_DS_FIX]
add r0, r1, r2
tst r8, #D_FLAG
addeq r1, r1, #1
subne r1, r1, #1
strh r1, [r9, #CPU_SI]
bl i286_memoryread
mov r1, r0
ldr r0, [r9, #CPU_DX]
CPUSV
bl iocore_out8
CPULD
mov pc, r11
outsw CPUWORK #3
ldrh r1, [r9, #CPU_SI]
ldr r2, [r9, #CPU_DS_FIX]
add r0, r1, r2
tst r8, #D_FLAG
addeq r1, r1, #2
subne r1, r1, #2
strh r1, [r9, #CPU_SI]
bl i286_memoryread_w
mov r1, r0
ldr r0, [r9, #CPU_DX]
CPUSV
bl iocore_out16
CPULD
mov pc, r11
jle_short tst r8, #Z_FLAG
bne jmps
jl_short eor r0, r8, r8 lsr #4
tst r0, #S_FLAG
bne jmps
nojmps CPUWORK #2
add r8, r8, #(1 << 16)
mov pc, r11
jnle_short tst r8, #Z_FLAG
bne nojmps
jnl_short eor r0, r8, r8 lsr #4
tst r0, #S_FLAG
bne nojmps
jmps JMPS #7
xchg_ea_r8 EAREG8 r6
cmp r0, #&c0
bcc xchgear8_1
CPUWORK #3
R8SRC r0, r5
ldrb r0, [r6, #CPU_REG]
ldrb r1, [r5, #CPU_REG]
strb r0, [r5, #CPU_REG]
strb r1, [r6, #CPU_REG]
mov pc, r11
xchgear8_1 CPUWORK #5
bl i286a_ea
cmp r0, #I286_MEMWRITEMAX
bcs xchgear8_2
ldrb r1, [r6, #CPU_REG]
ldrb r4, [r9, r0]
strb r1, [r9, r0]
strb r4, [r6, #CPU_REG]
mov pc, r11
xchgear8_2 mov r5, r0
bl i286_memoryread
ldrb r1, [r6, #CPU_REG]
strb r0, [r6, #CPU_REG]
mov r0, r5
mov lr, r11
b i286_memorywrite
xchg_ea_r16 EAREG16 r6
cmp r0, #&c0
bcc xchgear16_1
CPUWORK #3
R16SRC r0, r5
ldrh r0, [r6, #CPU_REG]
ldrh r1, [r5, #CPU_REG]
strh r0, [r5, #CPU_REG]
strh r1, [r6, #CPU_REG]
mov pc, r11
xchgear16_1 CPUWORK #5
bl i286a_ea
tst r0, #1
bne xchgear16_2
cmp r0, #I286_MEMWRITEMAX
bcs xchgear16_2
ldrh r1, [r6, #CPU_REG]
ldrh r4, [r9, r0]
strh r1, [r9, r0]
strh r4, [r6, #CPU_REG]
mov pc, r11
xchgear16_2 mov r5, r0
bl i286_memoryread_w
ldrh r1, [r6, #CPU_REG]
strh r0, [r6, #CPU_REG]
mov r0, r5
mov lr, r11
b i286_memorywrite_w
mov_ea_r8 EAREG8 r6
cmp r0, #&c0
bcc movear8_1
CPUWORK #3
R8SRC r0, r5
ldrb r0, [r6, #CPU_REG]
strb r0, [r5, #CPU_REG]
mov pc, r11
movear8_1 CPUWORK #5
bl i286a_ea
ldrb r1, [r6, #CPU_REG]
mov lr, r11
b i286_memorywrite
mov_ea_r16 EAREG16 r6
cmp r0, #&c0
bcc movear16_1
CPUWORK #3
R16SRC r0, r5
ldrh r0, [r6, #CPU_REG]
strh r0, [r5, #CPU_REG]
mov pc, r11
movear16_1 CPUWORK #5
bl i286a_ea
ldrh r1, [r6, #CPU_REG]
mov lr, r11
b i286_memorywrite_w
mov_r8_ea REG8EA r5, #2, #5
strb r0, [r5, #CPU_REG]
mov pc, r11
mov_r16_ea REG16EA r5, #2, #5
strh r0, [r5, #CPU_REG]
mov pc, r11
mov_ea_seg GETPC8
and r1, r0, #(3 << 3)
add r1, r9, r1 lsr #2
ldrh r5, [r1, #CPU_SEG]
cmp r0, #&c0
bcc measegm
CPUWORK #2
R16SRC r0, r4
strh r5, [r4, #CPU_REG]
mov pc, r11
measegm CPUWORK #3
bl i286a_ea
mov r1, r5
mov lr, r11
b i286_memorywrite_w
lea_r16_ea CPUWORK #3
GETPC8
cmp r0, #&c0
bcs leareg
R16DST r0, r5
bl i286a_lea
strh r0, [r5, #CPU_REG]
mov pc, r11
leareg mov r6, #6
sub r8, r8, #(2 << 16)
b i286a_localint
mov_seg_ea GETPC8
adr r6, msegea_tbl
and r1, r0, #(3 << 3)
mov r5, r8
ldr r6, [r6, r1 lsr #1]
cmp r0, #&c0
bcc msegeam
CPUWORK #2
R16SRC r0, r4
ldrh r0, [r4, #CPU_REG]
mov pc, r6
msegeam CPUWORK #5
bl i286a_ea
bl i286_memoryread_w
mov pc, r6
msegea_tbl dcd msegea_es
dcd msegea_cs
dcd msegea_ss
dcd msegea_ds
msegea_es mov r1, r0 lsl #4
strh r0, [r9, #CPU_ES]
str r1, [r9, #CPU_ES_BASE]
mov pc, r11
msegea_ds mov r1, r0 lsl #4
strh r0, [r9, #CPU_DS]
str r1, [r9, #CPU_DS_BASE]
str r1, [r9, #CPU_DS_FIX]
mov pc, r11
msegea_ss mov r1, r0 lsl #4
strh r0, [r9, #CPU_SS]
str r1, [r9, #CPU_SS_BASE]
str r1, [r9, #CPU_SS_FIX]
NEXT_OPCODE
msegea_cs sub r8, r5, #(2 << 16)
mov r6, #6
b i286a_localint
pop_ea POP #5
mov r5, r0
GETPC8
cmp r0, #&c0
bcs popreg
bl i286a_ea
mov r1, r5
mov lr, r11
b i286_memorywrite_w
popreg R16SRC r0, r1
strh r4, [r1, #CPU_REG]
mov pc, r11
nopandbios sub r0, r8, #(1 << 16)
CPUWORK #3
; ldr r5, [r9, #CPU_CS_BASE]
add r0, r5, r0 lsr #16
cmp r0, #&0f8000
movcc pc, r11
cmp r0, #&100000
movcs pc, r11
CPUSV
bl biosfunc
CPULD
ldrh r0, [r9, #CPU_ES]
ldrh r1, [r9, #CPU_CS]
ldrh r2, [r9, #CPU_SS]
ldrh r3, [r9, #CPU_DS]
mov r0, r0 lsl #4
mov r1, r1 lsl #4
mov r2, r2 lsl #4
mov r3, r3 lsl #4
str r0, [r9, #CPU_ES_BASE]
str r1, [r9, #CPU_CS_BASE]
str r2, [r9, #CPU_SS_BASE]
str r3, [r9, #CPU_DS_BASE]
str r2, [r9, #CPU_SS_FIX]
str r3, [r9, #CPU_DS_FIX]
mov pc, r11
cbw CPUWORK #2
ldrb r0, [r9, #CPU_AL]
mov r1, r0 lsl #24
mov r0, r1 asr #31
strb r0, [r9, #CPU_AH]
mov pc, r11
cwd CPUWORK #2
ldrb r0, [r9, #CPU_AH]
mov r1, r0 lsl #24
mov r0, r1 asr #31
strh r0, [r9, #CPU_DX]
mov pc, r11
call_far CPUWORK #13
ldrh r4, [r9, #CPU_SP]
ldrh r1, [r9, #CPU_CS]
ldr r5, [r9, #CPU_SS_BASE]
mov r4, r4 lsl #16
sub r4, r4, #(2 << 16)
add r0, r5, r4 lsr #16
bl i286_memorywrite_w ; cs
sub r4, r4, #(2 << 16)
add r12, r8, #(4 << 16)
mov r4, r4, lsr #16
mov r1, r12 lsr #16
add r0, r4, r5
bl i286_memorywrite_w ; ip
ldr r5, [r9, #CPU_CS_BASE]
strh r4, [r9, #CPU_SP]
add r0, r5, r8 lsr #16
bl i286_memoryread_w ; newip
add r8, r8, #(2 << 16)
mov r4, r0 lsl #16
add r0, r5, r8 lsr #16
bl i286_memoryread_w
mov r1, r0 lsl #4
strh r0, [r9, #CPU_CS]
str r1, [r9, #CPU_CS_BASE]
mov r0, r8 lsl #16
orr r8, r4, r0 lsr #16
mov pc, r11
wait CPUWORK #2
mov pc, r11
pushf CPUWORK #3
ldrh r3, [r9, #CPU_SP]
ldr r2, [r9, #CPU_SS_BASE]
mov r1, r8
subs r3, r3, #2
addcc r3, r3, #&10000
strh r3, [r9, #CPU_SP]
add r0, r3, r2
mov lr, r11
b i286_memorywrite_w
popf POP #5
mov r2, #3
mov r8, r8 lsr #16
and r2, r2, r0 lsr #8
bic r1, r0, #&f000 ; i286
ands r2, r2, r2 lsr #1
orr r8, r1, r8 lsl #16
strb r2, [r9, #CPU_TRAP]
bne popf_withirq
ldr r0, popf_pic
tst r8, #I_FLAG
moveq pc, r11
PICEXISTINTR
moveq pc, r11
popf_withirq I286IRQCHECKTERM
popf_pic dcd pic
sahf CPUWORK #2
ldrb r0, [r9, #CPU_AH]
bic r8, r8, #&ff
orr r8, r0, r8
mov pc, r11
lahf CPUWORK #2
strb r8, [r9, #CPU_AH]
mov pc, r11
mov_al_m8 CPUWORK #5
ldr r5, [r9, #CPU_DS_FIX]
GETPC16
add r0, r5, r0
bl i286_memoryread
strb r0, [r9, #CPU_AL]
mov pc, r11
mov_ax_m16 CPUWORK #5
ldr r5, [r9, #CPU_DS_FIX]
GETPC16
add r0, r5, r0
bl i286_memoryread_w
strh r0, [r9, #CPU_AX]
mov pc, r11
mov_m8_al CPUWORK #5
ldr r5, [r9, #CPU_DS_FIX]
GETPC16
ldrb r1, [r9, #CPU_AL]
add r0, r5, r0
mov lr, r11
b i286_memorywrite
mov_m16_ax CPUWORK #5
ldr r5, [r9, #CPU_DS_FIX]
GETPC16
ldrh r1, [r9, #CPU_AX]
add r0, r5, r0
mov lr, r11
b i286_memorywrite_w
movsb CPUWORK #5
ldrh r5, [r9, #CPU_SI]
ldr r0, [r9, #CPU_DS_FIX]
tst r8, #D_FLAG
moveq r4, #1
movne r4, #-1
add r0, r5, r0
bl i286_memoryread
ldrh r3, [r9, #CPU_DI]
ldr r2, [r9, #CPU_ES_BASE]
add r5, r5, r4
mov r1, r0
add r0, r3, r2
add r3, r3, r4
strh r5, [r9, #CPU_SI]
strh r3, [r9, #CPU_DI]
mov lr, r11
b i286_memorywrite
movsw CPUWORK #5
ldrh r5, [r9, #CPU_SI]
ldr r0, [r9, #CPU_DS_FIX]
tst r8, #D_FLAG
moveq r4, #2
movne r4, #-2
add r0, r5, r0
bl i286_memoryread_w
ldrh r3, [r9, #CPU_DI]
ldr r2, [r9, #CPU_ES_BASE]
add r5, r5, r4
mov r1, r0
add r0, r3, r2
add r3, r3, r4
strh r5, [r9, #CPU_SI]
strh r3, [r9, #CPU_DI]
mov lr, r11
b i286_memorywrite_w
cmpsb CPUWORK #8
ldrh r5, [r9, #CPU_SI]
ldr r0, [r9, #CPU_DS_FIX]
;
;
add r0, r5, r0
bl i286_memoryread
ldr r2, [r9, #CPU_ES_BASE]
ldrh r3, [r9, #CPU_DI]
mov r6, r0
and r12, r8, #D_FLAG
mov r12, r12 lsr #(10 - 1)
add r0, r2, r3
rsb r2, r12, #1
add r5, r2, r5
add r3, r2, r3
strh r5, [r9, #CPU_SI]
strh r3, [r9, #CPU_DI]
bl i286_memoryread
SUB8 r6, r0
mov pc, r11
cmpsw CPUWORK #8
ldrh r5, [r9, #CPU_SI]
ldr r0, [r9, #CPU_DS_FIX]
;
;
add r0, r5, r0
bl i286_memoryread_w
ldr r2, [r9, #CPU_ES_BASE]
ldrh r3, [r9, #CPU_DI]
mov r6, r0
and r12, r8, #D_FLAG
mov r12, r12 lsr #(10 - 2)
add r0, r2, r3
rsb r2, r12, #2
add r5, r2, r5
add r3, r2, r3
strh r5, [r9, #CPU_SI]
strh r3, [r9, #CPU_DI]
bl i286_memoryread_w
SUB16 r6, r0
mov pc, r11
stosb CPUWORK #3
ldrb r1, [r9, #CPU_AL]
ldrh r2, [r9, #CPU_DI]
ldr r0, [r9, #CPU_ES_BASE]
tst r8, #D_FLAG
addeq r3, r2, #1
subne r3, r2, #1
add r0, r2, r0
strh r3, [r9, #CPU_DI]
mov lr, r11
b i286_memorywrite
stosw CPUWORK #3
ldrh r1, [r9, #CPU_AX]
ldrh r2, [r9, #CPU_DI]
ldr r0, [r9, #CPU_ES_BASE]
tst r8, #D_FLAG
addeq r3, r2, #2
subne r3, r2, #2
add r0, r2, r0
strh r3, [r9, #CPU_DI]
mov lr, r11
b i286_memorywrite_w
lodsb CPUWORK #5
ldrh r5, [r9, #CPU_SI]
ldr r0, [r9, #CPU_DS_FIX]
tst r8, #D_FLAG
addeq r6, r5, #1
subne r6, r5, #1
add r0, r5, r0
bl i286_memoryread
strb r0, [r9, #CPU_AL]
strh r6, [r9, #CPU_SI]
mov pc, r11
lodsw CPUWORK #5
ldrh r5, [r9, #CPU_SI]
ldr r0, [r9, #CPU_DS_FIX]
tst r8, #D_FLAG
addeq r6, r5, #2
subne r6, r5, #2
add r0, r5, r0
bl i286_memoryread_w
strh r0, [r9, #CPU_AX]
strh r6, [r9, #CPU_SI]
mov pc, r11
scasb CPUWORK #7
ldrh r5, [r9, #CPU_DI]
ldr r0, [r9, #CPU_ES_BASE]
tst r8, #D_FLAG
addeq r6, r5, #1
subne r6, r5, #1
add r0, r5, r0
bl i286_memoryread
ldrb r5, [r9, #CPU_AL]
strh r6, [r9, #CPU_DI]
SUB8 r5, r0
mov pc, r11
scasw CPUWORK #7
ldrh r5, [r9, #CPU_DI]
ldr r0, [r9, #CPU_ES_BASE]
tst r8, #D_FLAG
addeq r6, r5, #2
subne r6, r5, #2
add r0, r5, r0
bl i286_memoryread_w
ldrh r5, [r9, #CPU_AX]
strh r6, [r9, #CPU_DI]
SUB16 r5, r0
mov pc, r11
ret_near_d16 GETPC16
ldrh r1, [r9, #CPU_SP]
ldr r2, [r9, #CPU_SS_BASE]
CPUWORK #11
add r3, r0, r1
add r0, r1, r2
add r3, r3, #2
strh r3, [r9, #CPU_SP]
bl i286_memoryread_w
mov r8, r8 lsl #16
mov r8, r8 lsr #16
orr r8, r8, r0 lsl #16
mov pc, r11
ret_near CPUWORK #11
ldrh r1, [r9, #CPU_SP]
ldr r0, [r9, #CPU_SS_BASE]
mov r8, r8 lsl #16
add r2, r1, #2
add r0, r1, r0
strh r2, [r9, #CPU_SP]
mov r8, r8 lsr #16
bl i286_memoryread_w
orr r8, r8, r0 lsl #16
mov pc, r11
les_r16_ea GETPC8
cmp r0, #&c0
bcs lr16_r
CPUWORK #3
R16DST r0, r5
bl i286a_a
add r4, r0, #2
add r0, r0, r6
bic r4, r4, #(1 << 16)
bl i286_memoryread_w
strh r0, [r5, #CPU_REG]
add r0, r4, r6
bl i286_memoryread_w
mov r1, r0 lsl #4
strh r0, [r9, #CPU_ES]
str r1, [r9, #CPU_ES_BASE]
mov pc, r11
lr16_r mov r6, #6
sub r8, r8, #(2 << 16)
b i286a_localint
lds_r16_ea GETPC8
cmp r0, #&c0
bcs lr16_r
CPUWORK #3
R16DST r0, r5
bl i286a_a
add r4, r0, #2
add r0, r0, r6
bic r4, r4, #(1 << 16)
bl i286_memoryread_w
strh r0, [r5, #CPU_REG]
add r0, r4, r6
bl i286_memoryread_w
mov r1, r0 lsl #4
strh r0, [r9, #CPU_DS]
str r1, [r9, #CPU_DS_BASE]
str r1, [r9, #CPU_DS_FIX]
mov pc, r11
mov_ea8_d8 GETPC8
cmp r0, #&c0
bcs med8_r
CPUWORK #3
bl i286a_ea
mov r4, r0
GETPC8
mov r1, r0
mov r0, r4
mov lr, r11
b i286_memorywrite
med8_r CPUWORK #2
R8DST r0, r4
GETPC8
strb r0, [r4, #CPU_REG]
mov pc, r11
mov_ea16_d16 GETPC8
cmp r0, #&c0
bcs med16_r
CPUWORK #3
bl i286a_ea
mov r4, r0
GETPC16
mov r1, r0
mov r0, r4
mov lr, r11
b i286_memorywrite_w
med16_r CPUWORK #2
R16DST r0, r4
GETPC16
strh r0, [r4, #CPU_REG]
mov pc, r11
enter ldrh r4, [r9, #CPU_SP]
ldrh r5, [r9, #CPU_BP]
ldr r0, [r9, #CPU_SS_BASE]
subs r4, r4, #2
addcc r4, r4, #&10000
mov r1, r5
add r0, r4, r0
bl i286_memorywrite_w
GETPC16
mov r6, r0
GETPC8
ands r0, r0, #&1f
bne enterlv1
CPUWORK #11
sub r0, r4, r6
strh r4, [r9, #CPU_BP]
strh r0, [r9, #CPU_SP]
mov pc, r11
enterlv1 cmp r0, #1
bne enterlv2
CPUWORK #15
strh r4, [r9, #CPU_BP]
ldr r0, [r9, #CPU_SS_BASE]
mov r1, r4
subs r4, r4, #2
addcc r4, r4, #&10000
add r0, r4, r0
sub r2, r4, r6
mov lr, r11
strh r2, [r9, #CPU_SP]
bl i286_memorywrite_w
enterlv2 mov r1, r0, lsl #2
add r1, r1, #12
CPUWORK r1
strh r4, [r9, #CPU_BP]
str r11, [sp, #-4]!
mov r4, r4 lsl #16
sub r2, r4, r0 lsl #17
sub r2, r4, #(2 << 16)
mov r2, r2 lsr #16
sub r3, r2, r6
strh r3, [r9, #CPU_SP]
mov r6, r0
ldr r11, [r9, #CPU_SS_BASE]
mov r1, r5
mov r5, r5 lsl #16
add r0, r11, r2
bl i286_memorywrite_w
entlv2lp sub r5, r5, #(2 << 16)
sub r4, r4, #(2 << 16)
add r0, r11, r5 lsr #16
bl i286_memoryread_w
mov r1, r0
add r0, r11, r4
bl i286_memorywrite_w
subs r6, r6, #1
bne entlv2lp
ldr pc, [sp], #4
leave ldrh r1, [r9, #CPU_BP]
ldr r0, [r9, #CPU_SS_BASE]
CPUWORK #5
add r4, r1, #2
add r0, r1, r0
bl i286_memoryread_w
strh r4, [r9, #CPU_SP]
strh r0, [r9, #CPU_BP]
mov pc, r11
ret_far_d16 CPUWORK #15
GETPC16
mov r6, r0
ldrh r4, [r9, #CPU_SP]
ldr r5, [r9, #CPU_SS_BASE]
;
;
add r0, r4, r5
add r4, r4, #2
bl i286_memoryread_w
mov r8, r8 lsl #16
mov r8, r8 lsr #16
orr r8, r8, r0 lsl #16
bic r4, r4, #(1 << 16)
add r0, r4, r5
add r4, r4, #2
bl i286_memoryread_w
add r4, r6, r4
mov r1, r0 lsl #4
strh r4, [r9, #CPU_SP]
strh r0, [r9, #CPU_CS]
str r1, [r9, #CPU_CS_BASE]
mov pc, r11
ret_far CPUWORK #15
ldrh r4, [r9, #CPU_SP]
ldr r5, [r9, #CPU_SS_BASE]
;
add r0, r4, r5
add r4, r4, #2
bl i286_memoryread_w
mov r8, r8 lsl #16
mov r8, r8 lsr #16
orr r8, r8, r0 lsl #16
bic r4, r4, #(1 << 16)
add r0, r4, r5
add r4, r4, #2
bl i286_memoryread_w
mov r1, r0 lsl #4
strh r4, [r9, #CPU_SP]
strh r0, [r9, #CPU_CS]
str r1, [r9, #CPU_CS_BASE]
mov pc, r11
int_03 CPUWORK #3
mov r6, #3
b i286a_localint
int_d8 CPUWORK #3
GETPC8
mov r6, r0
b i286a_localint
into CPUWORK #4
tst r8, #O_FLAG
moveq pc, r11
mov r6, #4
b i286a_localint
iret bl extirq_pop
CPUWORK #31
ldrh r1, [r9, #CPU_SP]
ldr r5, [r9, #CPU_SS_BASE]
;
add r4, r1, #2
add r0, r1, r5
bl i286_memoryread_w
bic r4, r4, #(1 << 16)
mov r8, r0 lsl #16
add r0, r4, r5
add r4, r4, #2
bl i286_memoryread_w
mov r1, r0 lsl #4
strh r0, [r9, #CPU_CS]
str r1, [r9, #CPU_CS_BASE]
bic r4, r4, #(1 << 16)
add r0, r4, r5
add r4, r4, #2
bl i286_memoryread_w
strh r4, [r9, #CPU_SP]
mov r2, #3
bic r1, r0, #&f000 ; i286
and r2, r2, r0 lsr #8
orr r8, r1, r8
ands r2, r2, r2 lsr #1
strb r2, [r9, #CPU_TRAP]
bne iret_withirq
ldr r0, iret_pic
tst r8, #I_FLAG
moveq pc, r11
PICEXISTINTR
moveq pc, r11
iret_withirq I286IRQCHECKTERM
iret_pic dcd pic
aam CPUWORK #16
GETPC8
movs r0, r0, lsl #7
beq aamzero
ldrb r1, [r9, #CPU_AL]
mov r2, #&80
mov r3, #0
aamlp cmp r1, r0
subcs r1, r1, r0
orrcs r3, r2, r3
movs r2, r2 lsr #1
bne aamlp
ldrb r2, [r10, r1]
add r1, r1, r3 lsl #8
bic r8, r8, #(S_FLAG + Z_FLAG + P_FLAG)
movs r3, r1 lsl #16
orreq r8, r8, #Z_FLAG
orrmi r8, r8, #S_FLAG
and r2, r2, #P_FLAG
orr r8, r2, r8
strh r1, [r9, #CPU_AX]
mov pc, r11
aamzero sub r8, r8, #(2 << 16)
mov r6, #0
b i286a_localint
aad CPUWORK #14
GETPC8
ldrh r1, [r9, #CPU_AX]
bic r8, r8, #(S_FLAG + Z_FLAG + P_FLAG)
;
mov r2, r1 lsr #8
mla r3, r2, r0, r1
;
and r1, r3, #&ff
;
ldrb r2, [r10, r1]
strh r1, [r9, #CPU_AX]
;
orr r8, r2, r8
mov pc, r11
setalc CPUWORK #2
mov r0, r8 lsr #31
mov r0, r0 asr #31
strb r0, [r9, #CPU_AL]
mov pc, r11
xlat ldrb r0, [r9, #CPU_AL]
ldrh r1, [r9, #CPU_BX]
ldr r2, [r9, #CPU_DS_FIX]
CPUWORK #5
add r0, r1, r0
bic r0, r0, #(1 << 16)
add r0, r2, r0
bl i286_memoryread
strb r0, [r9, #CPU_AL]
mov pc, r11
esc CPUWORK #2
GETPC8
cmp r0, #&c0
movcs pc, r11
mov lr, r11
b i286a_ea
loopnz ldrh r0, [r9, #CPU_CX]
;
;
subs r0, r0, #1
strh r0, [r9, #CPU_CX]
beq lpnznoj
tst r8, #Z_FLAG
bne lpnznoj
JMPS #8
lpnznoj CPUWORK #4
add r8, r8, #(1 << 16)
mov pc, r11
loopz ldrh r0, [r9, #CPU_CX]
;
;
subs r0, r0, #1
strh r0, [r9, #CPU_CX]
beq lpznoj
tst r8, #Z_FLAG
beq lpznoj
JMPS #8
lpznoj CPUWORK #4
add r8, r8, #(1 << 16)
mov pc, r11
loop ldrh r0, [r9, #CPU_CX]
;
;
subs r0, r0, #1
strh r0, [r9, #CPU_CX]
beq lpnoj
JMPS #8
lpnoj CPUWORK #4
add r8, r8, #(1 << 16)
mov pc, r11
jcxz ldrh r0, [r9, #CPU_CX]
;
;
cmp r0, #0
beq jcxzj
CPUWORK #4
add r8, r8, #(1 << 16)
mov pc, r11
jcxzj JMPS #8
in_al_d8 CPUWORK #5
GETPC8
add r3, r0, r8 lsr #16
CPUSV
str r3, [r9, #CPU_INPUT]
bl iocore_inp8
CPULD
mov r3, #0
strb r0, [r9, #CPU_AL]
str r3, [r9, #CPU_INPUT]
mov pc, r11
in_ax_d8 CPUWORK #5
GETPC8
CPUSV
bl iocore_inp16
CPULD
strh r0, [r9, #CPU_AX]
mov pc, r11
out_d8_al CPUWORK #3
GETPC8
ldrb r1, [r9, #CPU_AL]
CPUSV
bl iocore_out8
CPULD
mov pc, r11
out_d8_ax CPUWORK #3
GETPC8
ldrh r1, [r9, #CPU_AX]
CPUSV
bl iocore_out16
CPULD
mov pc, r11
call_near CPUWORK #7
GETPC16
ldrh r2, [r9, #CPU_SP]
ldr r3, [r9, #CPU_SS_BASE]
;
sub r1, r2, #2
mov r2, r1 lsl #16
strh r1, [r9, #CPU_SP]
mov r1, r8 lsr #16
add r8, r8, r0 lsl #16
add r0, r3, r2 lsr #16
mov lr, r11
b i286_memorywrite_w
jmp_near ldr r4, [r9, #CPU_CS_BASE]
add r5, r8, #(2 << 16)
CPUWORK #7
add r0, r4, r8 lsr #16
bl i286_memoryread_w
add r8, r5, r0 lsl #16
mov pc, r11
jmp_far CPUWORK #11
ldr r4, [r9, #CPU_CS_BASE]
add r5, r8, #(2 << 16)
mov r6, r8 lsl #16
add r0, r4, r8 lsr #16
bl i286_memoryread_w
mov r8, r0 lsl #16
add r0, r4, r5 lsr #16
bl i286_memoryread_w
add r8, r8, r6 lsr #16
mov r1, r0 lsl #4
strh r0, [r9, #CPU_CS]
str r1, [r9, #CPU_CS_BASE]
mov pc, r11
in_al_dx CPUWORK #5
ldrh r0, [r9, #CPU_DX]
CPUSV
bl iocore_inp8
CPULD
strb r0, [r9, #CPU_AL]
mov pc, r11
in_ax_dx CPUWORK #5
ldrh r0, [r9, #CPU_DX]
CPUSV
bl iocore_inp16
CPULD
strh r0, [r9, #CPU_AX]
mov pc, r11
out_dx_al CPUWORK #3
ldrb r1, [r9, #CPU_AL]
ldrh r0, [r9, #CPU_DX]
CPUSV
bl iocore_out8
CPULD
mov pc, r11
out_dx_ax CPUWORK #3
ldrh r1, [r9, #CPU_AX]
ldrh r0, [r9, #CPU_DX]
CPUSV
bl iocore_out16
CPULD
mov pc, r11
lock CPUWORK #2
mov pc, r11
hlt CREMSET #-1
sub r8, r8, #(1 << 16)
mov pc, r11
cmc CPUWORK #2
eor r8, r8, #C_FLAG
mov pc, r11
clc CPUWORK #2
bic r8, r8, #C_FLAG
mov pc, r11
stc CPUWORK #2
orr r8, r8, #C_FLAG
mov pc, r11
cli CPUWORK #2
mov r0, #0
bic r8, r8, #I_FLAG
strb r0, [r9, #CPU_TRAP]
mov pc, r11
sti CPUWORK #2
tst r8, #I_FLAG
bne sti_noirq
sti_set orr r8, r8, #I_FLAG
mov r1, #(T_FLAG >> 8)
ands r1, r1, r8 lsr #8
ldr r0, sti_pic
strneb r1, [r9, #CPU_TRAP]
bne sti_withirq
PICEXISTINTR
bne sti_withirq
sti_noirq NEXT_OPCODE
sti_pic dcd pic
sti_withirq REMAIN_ADJUST #1
cld CPUWORK #2
bic r8, r8, #D_FLAG
mov pc, r11
std CPUWORK #2
orr r8, r8, #D_FLAG
mov pc, r11
; ---- cpu execute
i286a_step stmdb sp!, {r4 - r11, lr}
ldr r9, ias_r9
ldr r10, ias_r10
;
ldr r5, [r9, #CPU_CS_BASE]
; ldr r7, [r9, #CPU_REMAINCLOCK]
ldr r8, [r9, #CPU_FLAG]
adr r4, optbl1
add r0, r5, r8 lsr #16
bl i286_memoryread
ldr r1, [r4, r0 lsl #2]
add r8, r8, #(1 << 16)
mov r11, pc
mov pc, r1
str r8, [r9, #CPU_FLAG]
ldmia sp!, {r4 - r11, pc}
i286a stmdb sp!, {r4 - r11, lr}
ldr r9, ias_r9
ldr r1, ias_r1
ldr r10, ias_r10
ldr r5, [r9, #CPU_CS_BASE]
ldr r8, [r9, #CPU_FLAG]
adr r4, optbl1
i286a_lp add r0, r5, r8 lsr #16
bl i286_memoryread
ldr r1, [r4, r0 lsl #2]
add r8, r8, #(1 << 16)
mov r11, pc
mov pc, r1
ldr r7, [r9, #CPU_REMAINCLOCK]
ldr r5, [r9, #CPU_CS_BASE]
adr r4, optbl1
cmp r7, #0
bgt i286a_lp
str r8, [r9, #CPU_FLAG]
ldmia sp!, {r4 - r11, pc}
ias_r9 dcd i286core - CPU_REG
ias_r1 dcd dmac
ias_r10 dcd _szpcflag8
optbl1 dcd add_ea_r8 ; 00
dcd add_ea_r16
dcd add_r8_ea
dcd add_r16_ea
dcd add_al_d8
dcd add_ax_d16
dcd push_es
dcd pop_es
dcd or_ea_r8
dcd or_ea_r16
dcd or_r8_ea
dcd or_r16_ea
dcd or_al_d8
dcd or_ax_d16
dcd push_cs
dcd i286a_cts
dcd adc_ea_r8 ; 10
dcd adc_ea_r16
dcd adc_r8_ea
dcd adc_r16_ea
dcd adc_al_d8
dcd adc_ax_d16
dcd push_ss
dcd pop_ss
dcd sbb_ea_r8
dcd sbb_ea_r16
dcd sbb_r8_ea
dcd sbb_r16_ea
dcd sbb_al_d8
dcd sbb_ax_d16
dcd push_ds
dcd pop_ds
dcd and_ea_r8 ; 20
dcd and_ea_r16
dcd and_r8_ea
dcd and_r16_ea
dcd and_al_d8
dcd and_ax_d16
dcd segprefix_es
dcd daa
dcd sub_ea_r8
dcd sub_ea_r16
dcd sub_r8_ea
dcd sub_r16_ea
dcd sub_al_d8
dcd sub_ax_d16
dcd segprefix_cs
dcd das
dcd xor_ea_r8 ; 30
dcd xor_ea_r16
dcd xor_r8_ea
dcd xor_r16_ea
dcd xor_al_d8
dcd xor_ax_d16
dcd segprefix_ss
dcd aaa
dcd cmp_ea_r8
dcd cmp_ea_r16
dcd cmp_r8_ea
dcd cmp_r16_ea
dcd cmp_al_d8
dcd cmp_ax_d16
dcd segprefix_ds
dcd aas
dcd inc_ax ; 40
dcd inc_cx
dcd inc_dx
dcd inc_bx
dcd inc_sp
dcd inc_bp
dcd inc_si
dcd inc_di
dcd dec_ax
dcd dec_cx
dcd dec_dx
dcd dec_bx
dcd dec_sp
dcd dec_bp
dcd dec_si
dcd dec_di
dcd push_ax ; 50
dcd push_cx
dcd push_dx
dcd push_bx
dcd push_sp
dcd push_bp
dcd push_si
dcd push_di
dcd pop_ax
dcd pop_cx
dcd pop_dx
dcd pop_bx
dcd pop_sp
dcd pop_bp
dcd pop_si
dcd pop_di
dcd pusha ; 60
dcd popa
dcd bound
dcd reserved ; arpl(reserved)
dcd reserved
dcd reserved
dcd reserved
dcd reserved
dcd push_d16
dcd imul_r_ea_d16
dcd push_d8
dcd imul_r_ea_d8
dcd insb
dcd insw
dcd outsb
dcd outsw
dcd jo_short ; 70
dcd jno_short
dcd jc_short
dcd jnc_short
dcd jz_short
dcd jnz_short
dcd jna_short
dcd ja_short
dcd js_short
dcd jns_short
dcd jp_short
dcd jnp_short
dcd jl_short
dcd jnl_short
dcd jle_short
dcd jnle_short
dcd i286aop80 ; 80
dcd i286aop81
dcd i286aop80
dcd i286aop83
dcd test_ea_r8
dcd test_ea_r16
dcd xchg_ea_r8
dcd xchg_ea_r16
dcd mov_ea_r8
dcd mov_ea_r16
dcd mov_r8_ea
dcd mov_r16_ea
dcd mov_ea_seg
dcd lea_r16_ea
dcd mov_seg_ea
dcd pop_ea
dcd nopandbios ; 90
dcd xchg_ax_cx
dcd xchg_ax_dx
dcd xchg_ax_bx
dcd xchg_ax_sp
dcd xchg_ax_bp
dcd xchg_ax_si
dcd xchg_ax_di
dcd cbw
dcd cwd
dcd call_far
dcd wait
dcd pushf
dcd popf
dcd sahf
dcd lahf
dcd mov_al_m8 ; a0
dcd mov_ax_m16
dcd mov_m8_al
dcd mov_m16_ax
dcd movsb
dcd movsw
dcd cmpsb
dcd cmpsw
dcd test_al_d8
dcd test_ax_d16
dcd stosb
dcd stosw
dcd lodsb
dcd lodsw
dcd scasb
dcd scasw
dcd mov_al_imm ; b0
dcd mov_cl_imm
dcd mov_dl_imm
dcd mov_bl_imm
dcd mov_ah_imm
dcd mov_ch_imm
dcd mov_dh_imm
dcd mov_bh_imm
dcd mov_ax_imm
dcd mov_cx_imm
dcd mov_dx_imm
dcd mov_bx_imm
dcd mov_sp_imm
dcd mov_bp_imm
dcd mov_si_imm
dcd mov_di_imm
dcd i286asft8_d8 ; c0
dcd i286asft16_d8
dcd ret_near_d16
dcd ret_near
dcd les_r16_ea ; (now testing i286a_a)
dcd lds_r16_ea ; (now testing i286a_a)
dcd mov_ea8_d8
dcd mov_ea16_d16
dcd enter
dcd leave
dcd ret_far_d16
dcd ret_far
dcd int_03
dcd int_d8
dcd into
dcd iret
dcd i286asft8_1 ; d0
dcd i286asft16_1
dcd i286asft8_cl
dcd i286asft16_cl
dcd aam
dcd aad
dcd setalc
dcd xlat
dcd esc
dcd esc
dcd esc
dcd esc
dcd esc
dcd esc
dcd esc
dcd esc
dcd loopnz ; e0
dcd loopz
dcd loop
dcd jcxz
dcd in_al_d8
dcd in_ax_d8
dcd out_d8_al
dcd out_d8_ax
dcd call_near
dcd jmp_near
dcd jmp_far
dcd jmp_short
dcd in_al_dx
dcd in_ax_dx
dcd out_dx_al
dcd out_dx_ax
dcd lock ; f0
dcd lock
dcd repne
dcd repe
dcd hlt
dcd cmc
dcd i286aopf6
dcd i286aopf7
dcd clc
dcd stc
dcd cli
dcd sti
dcd cld
dcd std
dcd i286aopfe
dcd i286aopff
MACRO
$label SEGPREFIX $b
$label ldr r1, [r9, $b]
ldrb r6, [r9, #CPU_PREFIX]
;; ldr r5, [r9, #CPU_CS_BASE]
add r0, r5, r8 lsr #16
str r1, [r9, #CPU_SS_FIX]
str r1, [r9, #CPU_DS_FIX]
cmp r6, #0
streq r11, [sp, #-4]!
adreq r11, prefix1_remove
add r6, r6, #1
cmp r6, #MAX_PREFIX
bcs prefix_fault
bl i286_memoryread
ldr r1, [r4, r0 lsl #2]
add r8, r8, #(1 << 16)
strb r6, [r9, #CPU_PREFIX]
mov pc, r1
MEND
segprefix_es SEGPREFIX #CPU_ES_BASE
segprefix_cs SEGPREFIX #CPU_CS_BASE
segprefix_ss SEGPREFIX #CPU_SS_BASE
segprefix_ds SEGPREFIX #CPU_DS_BASE
prefix_fault sub r8, r8, #((MAX_PREFIX - 1) << 16)
mov r6, #6
mov r11, pc
b i286a_localint
prefix1_remove ldr r0, [r9, #CPU_SS_BASE]
ldr r1, [r9, #CPU_DS_BASE]
mov r2, #0
str r0, [r9, #CPU_SS_FIX]
str r1, [r9, #CPU_DS_FIX]
strb r2, [r9, #CPU_PREFIX]
ldr pc, [sp], #4
; ---- repne
repne ldrb r6, [r9, #CPU_PREFIX]
adr r4, optblne
;; ldr r5, [r9, #CPU_CS_BASE]
add r0, r5, r8 lsr #16
cmp r6, #0
streq r11, [sp, #-4]!
adreq r11, prefix1_remove
add r6, r6, #1
cmp r6, #MAX_PREFIX
bcs prefix_fault
bl i286_memoryread
ldr r1, [r4, r0 lsl #2]
add r8, r8, #(1 << 16)
strb r6, [r9, #CPU_PREFIX]
mov pc, r1
optblne dcd add_ea_r8 ; 00
dcd add_ea_r16
dcd add_r8_ea
dcd add_r16_ea
dcd add_al_d8
dcd add_ax_d16
dcd push_es
dcd pop_es
dcd or_ea_r8
dcd or_ea_r16
dcd or_r8_ea
dcd or_r16_ea
dcd or_al_d8
dcd or_ax_d16
dcd push_cs
dcd i286a_cts
dcd adc_ea_r8 ; 10
dcd adc_ea_r16
dcd adc_r8_ea
dcd adc_r16_ea
dcd adc_al_d8
dcd adc_ax_d16
dcd push_ss
dcd pop_ss
dcd sbb_ea_r8
dcd sbb_ea_r16
dcd sbb_r8_ea
dcd sbb_r16_ea
dcd sbb_al_d8
dcd sbb_ax_d16
dcd push_ds
dcd pop_ds
dcd and_ea_r8 ; 20
dcd and_ea_r16
dcd and_r8_ea
dcd and_r16_ea
dcd and_al_d8
dcd and_ax_d16
dcd segprefix_es
dcd daa
dcd sub_ea_r8
dcd sub_ea_r16
dcd sub_r8_ea
dcd sub_r16_ea
dcd sub_al_d8
dcd sub_ax_d16
dcd segprefix_cs
dcd das
dcd xor_ea_r8 ; 30
dcd xor_ea_r16
dcd xor_r8_ea
dcd xor_r16_ea
dcd xor_al_d8
dcd xor_ax_d16
dcd segprefix_ss
dcd aaa
dcd cmp_ea_r8
dcd cmp_ea_r16
dcd cmp_r8_ea
dcd cmp_r16_ea
dcd cmp_al_d8
dcd cmp_ax_d16
dcd segprefix_ds
dcd aas
dcd inc_ax ; 40
dcd inc_cx
dcd inc_dx
dcd inc_bx
dcd inc_sp
dcd inc_bp
dcd inc_si
dcd inc_di
dcd dec_ax
dcd dec_cx
dcd dec_dx
dcd dec_bx
dcd dec_sp
dcd dec_bp
dcd dec_si
dcd dec_di
dcd push_ax ; 50
dcd push_cx
dcd push_dx
dcd push_bx
dcd push_sp
dcd push_bp
dcd push_si
dcd push_di
dcd pop_ax
dcd pop_cx
dcd pop_dx
dcd pop_bx
dcd pop_sp
dcd pop_bp
dcd pop_si
dcd pop_di
dcd pusha ; 60
dcd popa
dcd bound
dcd reserved ; arpl(reserved)
dcd reserved
dcd reserved
dcd reserved
dcd reserved
dcd push_d16
dcd imul_r_ea_d16
dcd push_d8
dcd imul_r_ea_d8
dcd i286a_rep_insb
dcd i286a_rep_insw
dcd i286a_rep_outsb
dcd i286a_rep_outsw
dcd jo_short ; 70
dcd jno_short
dcd jc_short
dcd jnc_short
dcd jz_short
dcd jnz_short
dcd jna_short
dcd ja_short
dcd js_short
dcd jns_short
dcd jp_short
dcd jnp_short
dcd jl_short
dcd jnl_short
dcd jle_short
dcd jnle_short
dcd i286aop80 ; 80
dcd i286aop81
dcd i286aop80
dcd i286aop83
dcd test_ea_r8
dcd test_ea_r16
dcd xchg_ea_r8
dcd xchg_ea_r16
dcd mov_ea_r8
dcd mov_ea_r16
dcd mov_r8_ea
dcd mov_r16_ea
dcd mov_ea_seg
dcd lea_r16_ea
dcd mov_seg_ea
dcd pop_ea
dcd nopandbios ; 90
dcd xchg_ax_cx
dcd xchg_ax_dx
dcd xchg_ax_bx
dcd xchg_ax_sp
dcd xchg_ax_bp
dcd xchg_ax_si
dcd xchg_ax_di
dcd cbw
dcd cwd
dcd call_far
dcd wait
dcd pushf
dcd popf
dcd sahf
dcd lahf
dcd mov_al_m8 ; a0
dcd mov_ax_m16
dcd mov_m8_al
dcd mov_m16_ax
dcd i286a_rep_movsb
dcd i286a_rep_movsw
dcd i286a_repne_cmpsb
dcd i286a_repne_cmpsw
dcd test_al_d8
dcd test_ax_d16
dcd i286a_rep_stosb
dcd i286a_rep_stosw
dcd i286a_rep_lodsb
dcd i286a_rep_lodsw
dcd i286a_repne_scasb
dcd i286a_repne_scasw
dcd mov_al_imm ; b0
dcd mov_cl_imm
dcd mov_dl_imm
dcd mov_bl_imm
dcd mov_ah_imm
dcd mov_ch_imm
dcd mov_dh_imm
dcd mov_bh_imm
dcd mov_ax_imm
dcd mov_cx_imm
dcd mov_dx_imm
dcd mov_bx_imm
dcd mov_sp_imm
dcd mov_bp_imm
dcd mov_si_imm
dcd mov_di_imm
dcd i286asft8_d8 ; c0
dcd i286asft16_d8
dcd ret_near_d16
dcd ret_near
dcd les_r16_ea
dcd lds_r16_ea
dcd mov_ea8_d8
dcd mov_ea16_d16
dcd enter
dcd leave
dcd ret_far_d16
dcd ret_far
dcd int_03
dcd int_d8
dcd into
dcd iret
dcd i286asft8_1 ; d0
dcd i286asft16_1
dcd i286asft8_cl
dcd i286asft16_cl
dcd aam
dcd aad
dcd setalc
dcd xlat
dcd esc
dcd esc
dcd esc
dcd esc
dcd esc
dcd esc
dcd esc
dcd esc
dcd loopnz ; e0
dcd loopz
dcd loop
dcd jcxz
dcd in_al_d8
dcd in_ax_d8
dcd out_d8_al
dcd out_d8_ax
dcd call_near
dcd jmp_near
dcd jmp_far
dcd jmp_short
dcd in_al_dx
dcd in_ax_dx
dcd out_dx_al
dcd out_dx_ax
dcd lock ; f0
dcd lock
dcd repne
dcd repe
dcd hlt
dcd cmc
dcd i286aopf6
dcd i286aopf7
dcd clc
dcd stc
dcd cli
dcd sti
dcd cld
dcd std
dcd i286aopfe
dcd i286aopff
; ---- repe
repe ldrb r6, [r9, #CPU_PREFIX]
adr r4, optble
;; ldr r5, [r9, #CPU_CS_BASE]
add r0, r5, r8 lsr #16
cmp r6, #0
streq r11, [sp, #-4]!
adreq r11, prefix2_remove
add r6, r6, #1
cmp r6, #MAX_PREFIX
bcs prefix_fault
bl i286_memoryread
ldr r1, [r4, r0 lsl #2]
add r8, r8, #(1 << 16)
strb r6, [r9, #CPU_PREFIX]
mov pc, r1
prefix2_remove ldr r0, [r9, #CPU_SS_BASE]
ldr r1, [r9, #CPU_DS_BASE]
mov r2, #0
str r0, [r9, #CPU_SS_FIX]
str r1, [r9, #CPU_DS_FIX]
strb r2, [r9, #CPU_PREFIX]
ldr pc, [sp], #4
optble dcd add_ea_r8 ; 00
dcd add_ea_r16
dcd add_r8_ea
dcd add_r16_ea
dcd add_al_d8
dcd add_ax_d16
dcd push_es
dcd pop_es
dcd or_ea_r8
dcd or_ea_r16
dcd or_r8_ea
dcd or_r16_ea
dcd or_al_d8
dcd or_ax_d16
dcd push_cs
dcd i286a_cts
dcd adc_ea_r8 ; 10
dcd adc_ea_r16
dcd adc_r8_ea
dcd adc_r16_ea
dcd adc_al_d8
dcd adc_ax_d16
dcd push_ss
dcd pop_ss
dcd sbb_ea_r8
dcd sbb_ea_r16
dcd sbb_r8_ea
dcd sbb_r16_ea
dcd sbb_al_d8
dcd sbb_ax_d16
dcd push_ds
dcd pop_ds
dcd and_ea_r8 ; 20
dcd and_ea_r16
dcd and_r8_ea
dcd and_r16_ea
dcd and_al_d8
dcd and_ax_d16
dcd segprefix_es
dcd daa
dcd sub_ea_r8
dcd sub_ea_r16
dcd sub_r8_ea
dcd sub_r16_ea
dcd sub_al_d8
dcd sub_ax_d16
dcd segprefix_cs
dcd das
dcd xor_ea_r8 ; 30
dcd xor_ea_r16
dcd xor_r8_ea
dcd xor_r16_ea
dcd xor_al_d8
dcd xor_ax_d16
dcd segprefix_ss
dcd aaa
dcd cmp_ea_r8
dcd cmp_ea_r16
dcd cmp_r8_ea
dcd cmp_r16_ea
dcd cmp_al_d8
dcd cmp_ax_d16
dcd segprefix_ds
dcd aas
dcd inc_ax ; 40
dcd inc_cx
dcd inc_dx
dcd inc_bx
dcd inc_sp
dcd inc_bp
dcd inc_si
dcd inc_di
dcd dec_ax
dcd dec_cx
dcd dec_dx
dcd dec_bx
dcd dec_sp
dcd dec_bp
dcd dec_si
dcd dec_di
dcd push_ax ; 50
dcd push_cx
dcd push_dx
dcd push_bx
dcd push_sp
dcd push_bp
dcd push_si
dcd push_di
dcd pop_ax
dcd pop_cx
dcd pop_dx
dcd pop_bx
dcd pop_sp
dcd pop_bp
dcd pop_si
dcd pop_di
dcd pusha ; 60
dcd popa
dcd bound
dcd reserved ; arpl(reserved)
dcd reserved
dcd reserved
dcd reserved
dcd reserved
dcd push_d16
dcd imul_r_ea_d16
dcd push_d8
dcd imul_r_ea_d8
dcd i286a_rep_insb
dcd i286a_rep_insw
dcd i286a_rep_outsb
dcd i286a_rep_outsw
dcd jo_short ; 70
dcd jno_short
dcd jc_short
dcd jnc_short
dcd jz_short
dcd jnz_short
dcd jna_short
dcd ja_short
dcd js_short
dcd jns_short
dcd jp_short
dcd jnp_short
dcd jl_short
dcd jnl_short
dcd jle_short
dcd jnle_short
dcd i286aop80 ; 80
dcd i286aop81
dcd i286aop80
dcd i286aop83
dcd test_ea_r8
dcd test_ea_r16
dcd xchg_ea_r8
dcd xchg_ea_r16
dcd mov_ea_r8
dcd mov_ea_r16
dcd mov_r8_ea
dcd mov_r16_ea
dcd mov_ea_seg
dcd lea_r16_ea
dcd mov_seg_ea
dcd pop_ea
dcd nopandbios ; 90
dcd xchg_ax_cx
dcd xchg_ax_dx
dcd xchg_ax_bx
dcd xchg_ax_sp
dcd xchg_ax_bp
dcd xchg_ax_si
dcd xchg_ax_di
dcd cbw
dcd cwd
dcd call_far
dcd wait
dcd pushf
dcd popf
dcd sahf
dcd lahf
dcd mov_al_m8 ; a0
dcd mov_ax_m16
dcd mov_m8_al
dcd mov_m16_ax
dcd i286a_rep_movsb
dcd i286a_rep_movsw
dcd i286a_repe_cmpsb
dcd i286a_repe_cmpsw
dcd test_al_d8
dcd test_ax_d16
dcd i286a_rep_stosb
dcd i286a_rep_stosw
dcd i286a_rep_lodsb
dcd i286a_rep_lodsw
dcd i286a_repe_scasb
dcd i286a_repe_scasw
dcd mov_al_imm ; b0
dcd mov_cl_imm
dcd mov_dl_imm
dcd mov_bl_imm
dcd mov_ah_imm
dcd mov_ch_imm
dcd mov_dh_imm
dcd mov_bh_imm
dcd mov_ax_imm
dcd mov_cx_imm
dcd mov_dx_imm
dcd mov_bx_imm
dcd mov_sp_imm
dcd mov_bp_imm
dcd mov_si_imm
dcd mov_di_imm
dcd i286asft8_d8 ; c0
dcd i286asft16_d8
dcd ret_near_d16
dcd ret_near
dcd les_r16_ea
dcd lds_r16_ea
dcd mov_ea8_d8
dcd mov_ea16_d16
dcd enter
dcd leave
dcd ret_far_d16
dcd ret_far
dcd int_03
dcd int_d8
dcd into
dcd iret
dcd i286asft8_1 ; d0
dcd i286asft16_1
dcd i286asft8_cl
dcd i286asft16_cl
dcd aam
dcd aad
dcd setalc
dcd xlat
dcd esc
dcd esc
dcd esc
dcd esc
dcd esc
dcd esc
dcd esc
dcd esc
dcd loopnz ; e0
dcd loopz
dcd loop
dcd jcxz
dcd in_al_d8
dcd in_ax_d8
dcd out_d8_al
dcd out_d8_ax
dcd call_near
dcd jmp_near
dcd jmp_far
dcd jmp_short
dcd in_al_dx
dcd in_ax_dx
dcd out_dx_al
dcd out_dx_ax
dcd lock ; f0
dcd lock
dcd repne
dcd repe
dcd hlt
dcd cmc
dcd i286aopf6
dcd i286aopf7
dcd clc
dcd stc
dcd cli
dcd sti
dcd cld
dcd std
dcd i286aopfe
dcd i286aopff
END
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