np2/i286a/memorya.s - view

File: [RetroPC.NET] / np2 / i286a / memorya.s
Revision 1.13: download - view: text, annotated - select for diffs
Sat Mar 12 00:12:57 2005 JST (20 years, 7 months ago) by yui
Branches: MAIN
CVS tags: VER_0_82_x64, VER_0_82, VER_0_81A, VER_0_81, HEAD

fix egc (T.Yui)

INCLUDE i286a.inc INCLUDE i286amem.inc INCLUDE i286aio.inc IMPORT vramupdate IMPORT tramupdate IMPORT egc_writebyte IMPORT egc_readbyte IMPORT egc_writeword IMPORT egc_readword EXPORT memfn EXPORT i286_memorymap EXPORT i286_vram_dispatch EXPORT i286_nonram_r EXPORT i286_nonram_rw AREA .data, DATA, READWRITE memfn dcd i286_rdex ; 00 dcd i286_rdex dcd i286_rd dcd i286_rd dcd i286_rd ; 20 dcd i286_rd dcd i286_rd dcd i286_rd dcd i286_rd ; 40 dcd i286_rd dcd i286_rd dcd i286_rd dcd i286_rd ; 60 dcd i286_rd dcd i286_rd dcd i286_rd dcd i286_rd ; 80 dcd i286_rd dcd i286_rd dcd i286_rd dcd tram_rd ; a0 dcd vram_r0 dcd vram_r0 dcd vram_r0 dcd emmc_rd ; c0 dcd emmc_rd dcd i286_rd dcd i286_rd dcd vram_r0 ; e0 dcd i286_rd dcd i286_rd dcd i286_rb dcd i286_wtex ; 00 dcd i286_wtex dcd i286_wt dcd i286_wt dcd i286_wt ; 20 dcd i286_wt dcd i286_wt dcd i286_wt dcd i286_wt ; 40 dcd i286_wt dcd i286_wt dcd i286_wt dcd i286_wt ; 60 dcd i286_wt dcd i286_wt dcd i286_wt dcd i286_wt ; 80 dcd i286_wt dcd i286_wt dcd i286_wt dcd tram_wt ; a0 dcd vram_w0 dcd vram_w0 dcd vram_w0 dcd emmc_wt ; c0 dcd emmc_wt dcd i286_wn dcd i286_wn dcd vram_w0 ; e0 dcd i286_wn dcd i286_wn dcd i286_wn dcd i286w_rdex ; 00 dcd i286w_rdex dcd i286w_rd dcd i286w_rd dcd i286w_rd ; 20 dcd i286w_rd dcd i286w_rd dcd i286w_rd dcd i286w_rd ; 40 dcd i286w_rd dcd i286w_rd dcd i286w_rd dcd i286w_rd ; 60 dcd i286w_rd dcd i286w_rd dcd i286w_rd dcd i286w_rd ; 80 dcd i286w_rd dcd i286w_rd dcd i286w_rd dcd tramw_rd ; a0 dcd vramw_r0 dcd vramw_r0 dcd vramw_r0 dcd emmcw_rd ; c0 dcd emmcw_rd dcd i286w_rd dcd i286w_rd dcd vramw_r0 ; e0 dcd i286w_rd dcd i286w_rd dcd i286w_rb dcd i286w_wtex ; 00 dcd i286w_wtex dcd i286w_wt dcd i286w_wt dcd i286w_wt ; 20 dcd i286w_wt dcd i286w_wt dcd i286w_wt dcd i286w_wt ; 40 dcd i286w_wt dcd i286w_wt dcd i286w_wt dcd i286w_wt ; 60 dcd i286w_wt dcd i286w_wt dcd i286w_wt dcd i286w_wt ; 80 dcd i286w_wt dcd i286w_wt dcd i286w_wt dcd tramw_wt ; a0 dcd vramw_w0 dcd vramw_w0 dcd vramw_w0 dcd emmcw_wt ; c0 dcd emmcw_wt dcd i286w_wn dcd i286w_wn dcd vramw_w0 ; e0 dcd i286w_wn dcd i286w_wn dcd i286w_wn AREA .text, CODE, READONLY ; ---- memory... i286_rd ldrb r0, [r9, r0] mov pc, lr i286_rdex ldr r12, [r9, #CPU_ADRSMASK] and r0, r12, r0 ldrb r0, [r9, r0] mov pc, lr i286w_rd add r2, r9, #1 ldrb r1, [r9, r0] ldrb r3, [r2, r0] orr r0, r1, r3 lsl #8 mov pc, lr i286w_rdex ldr r12, [r9, #CPU_ADRSMASK] add r2, r9, #1 and r0, r12, r0 ldrb r1, [r9, r0] ldrb r3, [r2, r0] orr r0, r1, r3 lsl #8 mov pc, lr i286_wt strb r1, [r9, r0] mov pc, lr i286_wtex ldr r2, [r9, #CPU_ADRSMASK] and r0, r2, r0 strb r1, [r9, r0] mov pc, lr i286w_wt add r2, r9, #1 mov r3, r1 lsr #8 strb r1, [r9, r0] strb r3, [r2, r0] mov pc, lr i286w_wtex ldr r12, [r9, #CPU_ADRSMASK] add r2, r9, #1 mov r3, r1 lsr #8 and r0, r12, r0 strb r1, [r9, r0] strb r3, [r2, r0] mov pc, lr ; ---- text ram tram_rd ;; ldr r3, trd_vramop ldrb r12, [r9, #MEMWAIT_TRAM] sub r1, r0, #&a4000 cmp r1, #&1000 CPUWORK r12 ldrcsb r0, [r0, r9] movcs pc, lr ldr r2, trd_cgwnd tst r0, #1 ldreq r3, [r2, #CGW_LOW] ldrne r3, [r2, #CGW_HIGH] and r0, r0, #(&f << 1) add r1, r9, #FONT_ADRS add r3, r1, r3 ldrb r0, [r3, r0 lsr #1] mov pc, lr trd_cgwnd dcd cgwindow ;; trd_vramop dcd vramop tramw_rd ;; ldr r3, twrd_vramop ldrb r2, [r9, #MEMWAIT_TRAM] ldr r12, twrd_cgwnd tst r0, #1 CPUWORK r2 bne tramw_rd_odd sub r1, r0, #&a4000 cmp r1, #&1000 ldrcsh r0, [r0, r9] movcs pc, lr ldr r2, [r12, #CGW_LOW] ldr r3, [r12, #CGW_HIGH] and r0, r0, #(&f << 1) add r1, r9, #FONT_ADRS add r12, r1, r0 lsr #1 ldrb r0, [r12, r2] ldrb r1, [r12, r3] orr r0, r0, r1 lsl #8 mov pc, lr twrd_cgwnd dcd cgwindow tramw_rd_odd add r1, r0, #1 cmp r1, #&a4000 bcc tramw_rd_oddt beq tramw_rd_3fff cmp r1, #&a5000 ble tramw_rd_oddf tramw_rd_oddt ldrb r0, [r0, r9] ldrb r1, [r1, r9] orr r0, r0, r1 lsl #8 mov pc, lr tramw_rd_3fff cmp r1, #(1 << 31) ; set v / clr z tramw_rd_oddf ldrvc r2, [r12, #CGW_HIGH] ldrne r12, [r12, #CGW_LOW] addal r3, r9, #FONT_ADRS andvc r0, r0, #(&f << 1) andne r1, r1, #(&f << 1) addvc r2, r2, r3 addne r12, r12, r3 ldrvcb r0, [r2, r0 lsr #1] ldrvsb r0, [r0, r9] ldrneb r1, [r12, r1 lsr #1] ldreqb r1, [r1, r9] orr r0, r0, r1 lsl #8 mov pc, lr tram_wt ;; ldr r3, twt_vramop ldrb r12, [r9, #MEMWAIT_TRAM] cmp r0, #&a4000 bcs twt_cgwnd CPUWORK r12 ldr r3, twt_gdcs mov r12, r0, lsl #(31 - 12) cmp r0, #&a2000 bcc twt_write tst r0, #1 movne pc, lr twt_attr cmp r12, #(&1fe0 << (31 - 12)) bcc twt_write tst r0, #2 beq twt_write ldrb r2, [r3, #GDCS_MSWACC] cmp r2, #0 moveq pc, lr twt_write strb r1, [r0, r9] twt_dirtyupd ldr r2, twt_tramupd ldrb r0, [r3, #GDCS_TEXTDISP] mov r1, #1 strb r1, [r2, r12, lsr #(32 - 12)] orr r0, r0, #1 strb r0, [r3, #GDCS_TEXTDISP] mov pc, lr ;; twt_vramop dcd vramop twt_gdcs dcd gdcs twt_tramupd dcd tramupdate tramw_wt ldrb r12, [r9, #MEMWAIT_TRAM] cmp r0, #&a4000 bcs twwt_cgwnd CPUWORK r12 ldr r3, twt_gdcs mov r12, r0 lsl #(31 - 12) tst r0, #1 bne twwto_main cmp r0, #&a2000 strcch r1, [r0, r9] bcc twt_dirtyupd bcs twt_attr twwto_main mov r2, r0 add r0, r0, #1 cmp r0, #&a2000 strleb r1, [r2, r9] mov r1, r1 lsr #8 bgt twt_attr strb r1, [r0, r9] ldrb r1, [r3, #GDCS_TEXTDISP] ldr r2, twt_tramupd mov r0, #1 orr r1, r1, #1 strb r0, [r2, r12 lsr #(32 - 12)] add r12, r12, #(1 << (32 - 12))] strb r1, [r3, #GDCS_TEXTDISP] strb r0, [r2, r12 lsr #(32 - 12)] mov pc, lr twt_cgwnd CPUWORK r12 ldr r3, twt_cgwindow cmp r0, #&a5000 movcs pc, lr ldrb r12, [r3, #CGW_WRITABLE] and r0, r0, #&1f tst r0, #1 tstne r12, #1 moveq pc, lr orr r12, r12, #&80 strb r12, [r3, #CGW_WRITABLE] ldr r3, [r3, #CGW_HIGH] add r12, r9, #FONT_ADRS add r12, r12, r0 lsr #1 strb r1, [r12, r3] mov pc, lr twt_cgwindow dcd cgwindow twwt_cgwnd CPUWORK r12 ldr r3, twt_cgwindow cmp r0, #&a5000 movcs pc, lr ldrb r12, [r3, #CGW_WRITABLE] tst r0, #1 moveq r1, r1 lsr #8 tst r12, #1 moveq pc, lr orr r12, r12, #&80 strb r12, [r3, #CGW_WRITABLE] and r0, r0, #(&f << 1) ldr r3, [r3, #CGW_HIGH] add r12, r9, #FONT_ADRS add r12, r12, r0 lsr #1 strb r1, [r12, r3] mov pc, lr ; ---- vram normal vram_r1 add r0, r0, #VRAM_STEP vram_r0 ldrb r3, [r9, #MEMWAIT_VRAM] ldrb r0, [r0, r9] CPUWORK r3 mov pc, lr vramw_r1 add r0, r0, #VRAM_STEP vramw_r0 ;; ldr r3, twrd_vramop add r2, r0, r9 ldrb r3, [r9, #MEMWAIT_VRAM] ldrb r0, [r9, r0] ldrb r1, [r2, #1] CPUWORK r3 orr r0, r0, r1 lsl #8 mov pc, lr vram_w0 ;; ldr r3, vw0_vramop ldr r2, vw0_gdcs strb r1, [r0, r9] ldrb r1, [r9, #MEMWAIT_VRAM] ldr r3, vw0_vramupd mov r0, r0, lsl #(32 - 15) ldrb r12, [r2, #GDCS_GRPHDISP] CPUWORK r1 ldrb r1, [r3, r0, lsr #(32 - 15)] orr r12, r12, #1 strb r12, [r2, #GDCS_GRPHDISP] orr r1, r1, #1 strb r1, [r3, r0, lsr #(32 - 15)] mov pc, lr ;; vw0_vramop dcd vramop vw0_gdcs dcd gdcs vw0_vramupd dcd vramupdate vram_w1 add r0, r0, #VRAM_STEP ;; ldr r3, vw1_vramop ldr r2, vw1_gdcs strb r1, [r0, r9] ldrb r1, [r9, #MEMWAIT_VRAM] ldr r3, vw1_vramupd mov r0, r0, lsl #(32 - 15) ldrb r12, [r2, #GDCS_GRPHDISP] CPUWORK r1 ldrb r1, [r3, r0, lsr #(32 - 15)] orr r12, r12, #2 strb r12, [r2, #GDCS_GRPHDISP] orr r1, r1, #2 strb r1, [r3, r0, lsr #(32 - 15)] mov pc, lr ;; vw1_vramop dcd vramop vw1_gdcs dcd gdcs vw1_vramupd dcd vramupdate vramw_w0 ;; ldr r3, vww0_vramop ldr r2, vww0_gdcs tst r0, #1 bne vww0_odd strh r1, [r0, r9] ldrb r1, [r9, #MEMWAIT_VRAM] ldr r3, vww0_vramupd mov r0, r0 lsl #(32 - 15) ldrb r12, [r2, #GDCS_GRPHDISP] add r3, r3, r0 lsr #(32 - 15) CPUWORK r1 ldrh r1, [r3] orr r12, r12, #1 strb r12, [r2, #GDCS_GRPHDISP] orr r1, r1, #1 orr r1, r1, #(1 << 8) strh r1, [r3] mov pc, lr ;; vww0_vramop dcd vramop vww0_gdcs dcd gdcs vww0_vramupd dcd vramupdate vww0_odd add r12, r0, r9 strb r1, [r0, r9] mov r1, r1 lsr #8 strb r1, [r12, #1] ldrb r1, [r9, #MEMWAIT_VRAM] ldr r3, vww0_vramupd mov r0, r0, lsl #(32 - 15) ldrb r12, [r2, #GDCS_GRPHDISP] add r3, r3, r0 lsr #(32 - 15) CPUWORK r1 ldrb r0, [r3] ldrb r1, [r3, #1] orr r12, r12, #1 strb r12, [r2, #GDCS_GRPHDISP] orr r0, r0, #1 orr r1, r1, #1 strb r0, [r3] strb r1, [r3, #1] mov pc, lr vramw_w1 add r0, r0, #VRAM_STEP ;; ldr r3, vww1_vramop ldr r2, vww1_gdcs tst r0, #1 bne vww1_odd strh r1, [r0, r9] ldrb r1, [r9, #MEMWAIT_VRAM] ldr r3, vww1_vramupd mov r0, r0 lsl #(32 - 15) ldrb r12, [r2, #GDCS_GRPHDISP] add r3, r3, r0 lsr #(32 - 15) CPUWORK r1 ldrh r1, [r3] orr r12, r12, #2 strb r12, [r2, #GDCS_GRPHDISP] orr r1, r1, #2 orr r1, r1, #(2 << 8) strh r1, [r3] mov pc, lr ;; vww1_vramop dcd vramop vww1_gdcs dcd gdcs vww1_vramupd dcd vramupdate vww1_odd add r12, r0, r9 strb r1, [r0, r9] mov r1, r1 lsr #8 strb r1, [r12, #1] ldrb r1, [r9, #MEMWAIT_VRAM] ldr r3, vww1_vramupd mov r0, r0, lsl #(32 - 15) ldrb r12, [r2, #GDCS_GRPHDISP] add r3, r3, r0 lsr #(32 - 15) CPUWORK r1 ldrb r0, [r3] ldrb r1, [r3, #1] orr r12, r12, #2 strb r12, [r2, #GDCS_GRPHDISP] orr r0, r0, #2 orr r1, r1, #2 strb r0, [r3] strb r1, [r3, #1] mov pc, lr ; ---- grcg... grcg_tcr1 add r0, r0, #VRAM_STEP grcg_tcr0 ldr r3, grw_grcg ldrb r2, [r9, #MEMWAIT_GRCG] bic r0, r0, #&f8000 ldrb r12, [r3, #GRCG_MODEREG] CPUWORK r2 mov r12, r12 lsl #28 tst r12, #(1 << 28) add r0, r0, #VRAM_B ldreqb r1, [r3, #GRCG_TILE + 0] ldreqb r2, [r0, r9] eoreq r1, r2, r1 orreq r12, r1, r12 tst r12, #(1 << 29) add r0, r0, #(VRAM_R - VRAM_B) ldreqb r1, [r3, #GRCG_TILE + 2] ldreqb r2, [r0, r9] eoreq r1, r2, r1 orreq r12, r1, r12 tst r12, #(1 << 30) add r0, r0, #(VRAM_G - VRAM_R) ldreqb r1, [r3, #GRCG_TILE + 4] ldreqb r2, [r0, r9] eoreq r1, r2, r1 orreq r12, r1, r12 tst r12, #(1 << 31) add r0, r0, #(VRAM_E - VRAM_G) ldreqb r1, [r3, #GRCG_TILE + 6] ldreqb r2, [r0, r9] eoreq r1, r2, r1 orreq r12, r1, r12 and r12, r12, #&ff eor r0, r12, #&ff mov pc, lr tcr_grcg dcd grcg grcgw_tcr1 add r0, r0, #VRAM_STEP grcgw_tcr0 ldr r3, tcrw_grcg ldrb r2, [r9, #MEMWAIT_GRCG] bic r0, r0, #&f8000 ldrb r12, [r3, #GRCG_MODEREG] CPUWORK r2 tst r0, #1 mov r12, r12 lsl #28 bne tcrw_odd tst r12, #(1 << 28) add r0, r0, #VRAM_B ldreqh r1, [r3, #(GRCG_TILE + 0)] ldreqh r2, [r0, r9] add r0, r0, #(VRAM_R - VRAM_B) eoreq r1, r2, r1 orreq r12, r1, r12 tst r12, #(1 << 29) ldreqh r1, [r3, #(GRCG_TILE + 2)] ldreqh r2, [r0, r9] add r0, r0, #(VRAM_G - VRAM_R) eoreq r1, r2, r1 orreq r12, r1, r12 tst r12, #(1 << 30) ldreqh r1, [r3, #(GRCG_TILE + 4)] ldreqh r2, [r0, r9] add r0, r0, #(VRAM_E - VRAM_G) eoreq r1, r2, r1 orreq r12, r1, r12 tst r12, #(1 << 31) ldreqh r1, [r3, #(GRCG_TILE + 6)] ldreqh r2, [r0, r9] eoreq r1, r2, r1 orreq r12, r1, r12 mvn r12, r12 lsl #16 mov r0, r12 lsr #16 mov pc, lr tcrw_grcg dcd grcg tcrw_odd add r0, r0, r9 str lr, [sp, #-4]! add r0, r0, #VRAM_B tst r12, #(1 << 28) ldreqb r1, [r0] ldreqb r2, [r0, #1] ldreqh lr, [r3, #GRCG_TILE + 0] add r0, r0, #(VRAM_R - VRAM_B) orreq r1, r1, r2 lsl #8 eoreq r1, r1, lr orreq r12, r1, r12 tst r12, #(1 << 29) ldreqb r1, [r0] ldreqb r2, [r0, #1] ldreqh lr, [r3, #GRCG_TILE + 2] add r0, r0, #(VRAM_G - VRAM_R) orreq r1, r1, r2 lsl #8 eoreq r1, r1, lr orreq r12, r1, r12 tst r12, #(1 << 30) ldreqb r1, [r0] ldreqb r2, [r0, #1] ldreqh lr, [r3, #GRCG_TILE + 4] add r0, r0, #(VRAM_E - VRAM_G) orreq r1, r1, r2 lsl #8 eoreq r1, r1, lr orreq r12, r1, r12 tst r12, #(1 << 31) ldreqb r1, [r0] ldreqb r2, [r0, #1] ldreqh lr, [r3, #GRCG_TILE + 6] orreq r1, r1, r2 lsl #8 eoreq r1, r1, lr orreq r12, r1, r12 mvn r12, r12 lsl #16 mov r0, r12 lsr #16 ldr pc, [sp], #4 grcg_tdw0 mov r0, r0, lsl #(32 - 15) mov r0, r0, lsr #(32 - 15) ldr r2, grw_vramupd ldrb r12, [r2, r0] orr r12, r12, #1 strb r12, [r2, r0] ldr r2, grw_gdcs ldrb r12, [r2, #GDCS_GRPHDISP] orr r12, r12, #1 strb r12, [r2, #GDCS_GRPHDISP] b grcg_tdw grcg_tdw1 mov r0, r0, lsl #(32 - 15) mov r0, r0, lsr #(32 - 15) ldr r2, grw_vramupd ldrb r12, [r2, r0] orr r12, r12, #2 strb r12, [r2, r0] ldr r2, grw_gdcs ldrb r12, [r2, #GDCS_GRPHDISP] orr r12, r12, #2 strb r12, [r2, #GDCS_GRPHDISP] add r0, r0, #VRAM_STEP grcg_tdw add r0, r0, #VRAM_B ldr r3, grw_grcg add r0, r0, r9 ldrb r2, [r3, #GRCG_MODEREG] orr r1, r1, r2 lsl #16 tst r1, #(1 << 16) ldreqb r2, [r3, #(GRCG_TILE + 0)] streqb r2, [r0] tst r1, #(2 << 16) add r0, r0, #(VRAM_R - VRAM_B) ldreqb r2, [r3, #(GRCG_TILE + 2)] streqb r2, [r0] tst r1, #(4 << 16) add r0, r0, #(VRAM_G - VRAM_R) ldreqb r2, [r3, #(GRCG_TILE + 4)] streqb r2, [r0] tst r1, #(8 << 16) add r0, r0, #(VRAM_E - VRAM_G) ldreqb r2, [r3, #(GRCG_TILE + 6)] streqb r2, [r0] ;; ldr r3, grw_vramop ldrb r3, [r9, #MEMWAIT_GRCG] CPUWORK r3 mov pc, lr grcg_rmw0 cmp r1, #&ff beq grcg_tdw0 cmp r1, #0 beq grcg_clock mov r0, r0, lsl #(32 - 15) mov r0, r0, lsr #(32 - 15) ldr r2, grw_vramupd ldrb r12, [r2, r0] orr r12, r12, #1 strb r12, [r2, r0] ldr r2, grw_gdcs ldrb r12, [r2, #GDCS_GRPHDISP] orr r12, r12, #1 strb r12, [r2, #GDCS_GRPHDISP] b grcg_rmw grcg_rmw1 cmp r1, #&ff beq grcg_tdw1 cmp r1, #0 beq grcg_clock mov r0, r0, lsl #(32 - 15) mov r0, r0, lsr #(32 - 15) ldr r2, grw_vramupd ldrb r12, [r2, r0] orr r12, r12, #2 strb r12, [r2, r0] ldr r2, grw_gdcs ldrb r12, [r2, #GDCS_GRPHDISP] orr r12, r12, #2 strb r12, [r2, #GDCS_GRPHDISP] add r0, r0, #VRAM_STEP grcg_rmw add r0, r0, #VRAM_B ldr r3, grw_grcg add r0, r0, r9 ldrb r2, [r3, #GRCG_MODEREG] orr r1, r1, r2 lsl #16 tst r1, #(1 << 16) bne grmw_bed ldrb r12, [r0] ldrb r2, [r3, #(GRCG_TILE + 0)] and r2, r2, r1 bic r12, r12, r1 orr r12, r12, r2 strb r12, [r0] grmw_bed tst r1, #(2 << 16) add r0, r0, #(VRAM_R - VRAM_B) bne grmw_red ldrb r12, [r0] ldrb r2, [r3, #(GRCG_TILE + 2)] and r2, r2, r1 bic r12, r12, r1 orr r12, r12, r2 strb r12, [r0] grmw_red tst r1, #(4 << 16) add r0, r0, #(VRAM_G - VRAM_R) bne grmw_ged ldrb r12, [r0] ldrb r2, [r3, #(GRCG_TILE + 4)] and r2, r2, r1 bic r12, r12, r1 orr r12, r12, r2 strb r12, [r0] grmw_ged tst r1, #(8 << 16) bne grcg_clock add r0, r0, #(VRAM_E - VRAM_G) ldrb r12, [r0] ldrb r2, [r3, #(GRCG_TILE + 6)] and r2, r2, r1 bic r12, r12, r1 orr r12, r12, r2 strb r12, [r0] grcg_clock ;; ldr r3, grw_vramop ldrb r3, [r9, #MEMWAIT_GRCG] CPUWORK r3 mov pc, lr grw_vramupd dcd vramupdate grw_gdcs dcd gdcs grw_grcg dcd grcg ;; grw_vramop dcd vramop grcgw_tdw0 ldr r2, grww_gdcs ldrb r12, [r2, #GDCS_GRPHDISP] orr r12, r12, #1 strb r12, [r2, #GDCS_GRPHDISP] mov r0, r0, lsl #(32 - 15) mov r0, r0, lsr #(32 - 15) ldr r2, grw_vramupd add r2, r2, r0 ldrb r12, [r2] orr r12, r12, #1 strb r12, [r2] ldrb r12, [r2, #1] orr r12, r12, #1 strb r12, [r2, #1] b grcgw_tdw grcgw_tdw1 ldr r2, grww_gdcs ldrb r12, [r2, #GDCS_GRPHDISP] orr r12, r12, #2 strb r12, [r2, #GDCS_GRPHDISP] mov r0, r0, lsl #(32 - 15) mov r0, r0, lsr #(32 - 15) ldr r2, grww_vramupd add r2, r2, r0 ldrb r12, [r2] orr r12, r12, #2 strb r12, [r2] ldrb r12, [r2, #1] orr r12, r12, #2 strb r12, [r2, #1] add r0, r0, #VRAM_STEP grcgw_tdw add r2, r9, #VRAM_B ldr r3, grww_grcg add r0, r0, r2 ldrb r2, [r3, #GRCG_MODEREG] orr r1, r1, r2 lsl #16 tst r1, #(1 << 16) ldreqb r2, [r3, #(GRCG_TILE + 0)] streqb r2, [r0] streqb r2, [r0, #1] tst r1, #(2 << 16) add r0, r0, #(VRAM_R - VRAM_B) ldreqb r2, [r3, #(GRCG_TILE + 2)] streqb r2, [r0] streqb r2, [r0, #1] tst r1, #(4 << 16) add r0, r0, #(VRAM_G - VRAM_R) ldreqb r2, [r3, #(GRCG_TILE + 4)] streqb r2, [r0] streqb r2, [r0, #1] tst r1, #(8 << 16) add r0, r0, #(VRAM_E - VRAM_G) ldreqb r2, [r3, #(GRCG_TILE + 6)] streqb r2, [r0] streqb r2, [r0, #1] ;; ldr r3, grww_vramop ldrb r3, [r9, #MEMWAIT_GRCG] CPUWORK r3 mov pc, lr grcgw_rmw0 add r2, r1, #1 cmp r2, #&10000 beq grcgw_tdw0 cmp r1, #0 beq grcgw_clock ldr r2, grww_gdcs ldrb r12, [r2, #GDCS_GRPHDISP] orr r12, r12, #1 strb r12, [r2, #GDCS_GRPHDISP] mov r0, r0, lsl #(32 - 15) mov r0, r0, lsr #(32 - 15) ldr r2, grww_vramupd tst r0, #1 bne grcgo_rmw0 ldrh r12, [r2, r0] orr r12, r12, #1 orr r12, r12, #(1 << 8) strh r12, [r2, r0] b grcge_rmw grcgw_rmw1 add r2, r1, #1 cmp r2, #&10000 beq grcgw_tdw1 cmp r1, #0 beq grcgw_clock ldr r2, grww_gdcs ldrb r12, [r2, #GDCS_GRPHDISP] orr r12, r12, #2 strb r12, [r2, #GDCS_GRPHDISP] mov r0, r0, lsl #(32 - 15) mov r0, r0, lsr #(32 - 15) ldr r2, grww_vramupd tst r0, #1 bne grcgo_rmw1 ldrh r12, [r2, r0] orr r12, r12, #2 orr r12, r12, #(2 << 8) strh r12, [r2, r0] add r0, r0, #VRAM_STEP grcge_rmw add r2, r9, #VRAM_B ldr r3, grww_grcg add r0, r0, r2 ldrb r2, [r3, #GRCG_MODEREG] orr r1, r1, r2 lsl #16 tst r1, #(1 << 16) bne grmwo_bed ldrh r2, [r3, #(GRCG_TILE + 0)] and r2, r2, r1 ldrh r12, [r0] bic r12, r12, r1 orr r12, r12, r2 strh r12, [r0] grmwe_bed tst r1, #(2 << 16) add r0, r0, #(VRAM_R - VRAM_B) bne grmwo_red ldrh r2, [r3, #(GRCG_TILE + 2)] and r2, r2, r1 ldrh r12, [r0] bic r12, r12, r1 orr r12, r12, r2 strh r12, [r0] grmwe_red tst r1, #(4 << 16) add r0, r0, #(VRAM_G - VRAM_R) bne grmwo_ged ldrh r2, [r3, #(GRCG_TILE + 4)] and r2, r2, r1 ldrh r12, [r0] bic r12, r12, r1 orr r12, r12, r2 strh r12, [r0] grmwe_ged tst r1, #(8 << 16) bne grmwe_eed add r0, r0, #(VRAM_E - VRAM_G) ldrh r2, [r3, #(GRCG_TILE + 6)] and r2, r2, r1 ldrh r12, [r0] bic r12, r12, r1 orr r12, r12, r2 strh r12, [r0] grmwe_eed ;; ldr r3, grww_vramop ldrb r3, [r9, #MEMWAIT_GRCG] CPUWORK r3 mov pc, lr grww_gdcs dcd gdcs grww_vramupd dcd vramupdate grww_grcg dcd grcg ;; grww_vramop dcd vramop grcgo_rmw0 add r2, r2, r0 ldrb r12, [r2] orr r12, r12, #1 strb r12, [r2] ldrb r12, [r2, #1] orr r12, r12, #1 strb r12, [r2, #1] b grcgo_rmw grcgo_rmw1 add r2, r2, r0 ldrb r12, [r2] orr r12, r12, #2 strb r12, [r2] ldrb r12, [r2, #1] orr r12, r12, #2 strb r12, [r2, #1] add r0, r0, #VRAM_STEP grcgo_rmw add r2, r9, #VRAM_B ldr r3, grww_grcg add r0, r0, r2 ldrb r2, [r3, #GRCG_MODEREG] orr r1, r1, r2 lsl #16 tst r1, #(1 << 16) bne grmwo_bed ldrh r2, [r3, #(GRCG_TILE + 0)] and r2, r2, r1 ldrb r12, [r0] bic r12, r12, r1 orr r12, r12, r2 strb r12, [r0] ldrb r12, [r0, #1] bic r12, r12, r1 lsr #8 orr r12, r12, r2 lsr #8 strb r12, [r0, #1] grmwo_bed tst r1, #(2 << 16) add r0, r0, #(VRAM_R - VRAM_B) bne grmwo_red ldrh r2, [r3, #(GRCG_TILE + 2)] and r2, r2, r1 ldrb r12, [r0] bic r12, r12, r1 orr r12, r12, r2 strb r12, [r0] ldrb r12, [r0, #1] bic r12, r12, r1 lsr #8 orr r12, r12, r2 lsr #8 strb r12, [r0, #1] grmwo_red tst r1, #(4 << 16) add r0, r0, #(VRAM_G - VRAM_R) bne grmwo_ged ldrh r2, [r3, #(GRCG_TILE + 4)] and r2, r2, r1 ldrb r12, [r0] bic r12, r12, r1 orr r12, r12, r2 strb r12, [r0] ldrb r12, [r0, #1] bic r12, r12, r1 lsr #8 orr r12, r12, r2 lsr #8 strb r12, [r0, #1] grmwo_ged tst r1, #(8 << 16) bne grcgw_clock add r0, r0, #(VRAM_E - VRAM_G) ldrh r2, [r3, #(GRCG_TILE + 6)] and r2, r2, r1 ldrb r12, [r0] bic r12, r12, r1 orr r12, r12, r2 strb r12, [r0] ldrb r12, [r0, #1] bic r12, r12, r1 lsr #8 orr r12, r12, r2 lsr #8 strb r12, [r0, #1] grcgw_clock ;; ldr r3, grww_vramop ldrb r3, [r9, #MEMWAIT_GRCG] CPUWORK r3 mov pc, lr ; ---- egc egc_rd ldrb r3, [r9, #MEMWAIT_GRCG] CPUWORK r3 b egc_readbyte egcw_rd ldrb r3, [r9, #MEMWAIT_GRCG] ldrb r2, egcwrd_egc tst r0, #1 CPUWORK r3 beq egc_readword ldrh r12, [r2, #EGC_SFT] tst r12, #&1000 bne egcwrd_std add r2, r0, #1 mov r3, r1 lsr #8 stmdb sp!, {r2, r3, lr} bl egc_writebyte ldmia sp!, {r0, r1, lr} b egc_writebyte egcwrd_std stmdb sp!, {r0, r1, lr} add r0, r0, #1 mov r1, r1 lsr #8 bl egc_writebyte ldmia sp!, {r0, r1, lr} b egc_writebyte egcwrd_egc dcd egc egc_wt ldrb r3, [r9, #MEMWAIT_GRCG] CPUWORK r3 b egc_writebyte egcw_wt ldrb r3, [r9, #MEMWAIT_GRCG] ldrb r2, egcwwt_egc tst r0, #1 CPUWORK r3 beq egc_writeword ldrh r12, [r2, #EGC_SFT] stmdb sp!, {r4, r5, lr} tst r12, #&1000 bne egcwwt_std add r4, r0, #1 mov r5, r1 lsr #8 bl egc_readbyte mov r1, r5 mov r5, r0 mov r0, r4 bl egc_readbyte orr r0, r5, r0 lsl #8 ldmia sp!, {r4, r5, lr} egcwwt_std mov r4, r0 mov r5, r1 add r0, r0, #1 mov r1, r1 lsr #8 bl egc_readbyte mov r1, r5 mov r5, r0 mov r0, r4 bl egc_readbyte orr r0, r5, r0 lsl #8 ldmia sp!, {r4, r5, lr} egcwwt_egc dcd egc ; ---- emmc emmc_rd add r2, r9, #CPU_EMS and r3, r0, #(3 << 14) ldr r2, [r2, r3 lsr #(14 - 2)] mov r0, r0 lsl #(32 - 14) ldrb r0, [r2, r0 lsr #(32 - 14)] mov pc, lr emmc_wt add r2, r9, #CPU_EMS and r3, r0, #(3 << 14) ldr r2, [r2, r3 lsr #(14 - 2)] mov r0, r0 lsl #(32 - 14) strb r1, [r2, r0 lsr #(32 - 14)] mov pc, lr emmcw_rd add r2, r9, #CPU_EMS and r12, r0, #(3 << 14) mov r0, r0 lsl #(32 - 14) ldr r3, [r2, r12 lsr #(14 - 2)] tst r0, #(1 << (32 - 14)) bne emmcw_rd_odd add r3, r3, r0 lsr #(32 - 14) ldrh r0, [r3] mov pc, lr emmcw_rd_odd ldrb r1, [r3, r0 lsr #(32 - 14)] adds r0, r0, #(1 << (32 - 14)) beq emmcw_rd_3fff ldrb r0, [r3, r0 lsr #(32 - 14)] add r0, r1, r0 lsl #8 mov pc, lr emmcw_rd_3fff eor r12, r12, #(1 << 14) ; ! ldr r0, [r2, r12 lsr #(14 - 2)] ldrb r0, [r0] add r0, r1, r0 lsl #8 mov pc, lr emmcw_wt add r2, r9, #CPU_EMS and r12, r0, #(3 << 14) mov r0, r0 lsl #(32 - 14) ldr r3, [r2, r12 lsr #(14 - 2)] tst r0, #(1 << (32 - 14)) bne emmcw_wt_odd add r3, r3, r0 lsr #(32 - 14) strh r1, [r3] mov pc, lr emmcw_wt_odd strb r1, [r3, r0 lsr #(32 - 14)] mov r1, r1 lsr #8 adds r0, r0, #(1 << (32 - 14)) beq emmcw_wt_3fff strb r1, [r3, r0 lsr #(32 - 14)] mov pc, lr emmcw_wt_3fff eor r12, r12, #(1 << 14) ; ! ldr r0, [r2, r12 lsr #(14 - 2)] strb r1, [r0] mov pc, lr ; ---- itf i286_rb ldrb r2, [r9, #CPU_ITFBANK] orr r12, r0, #VRAM_STEP cmp r2, #0 ldreqb r0, [r0, r9] ldrneb r0, [r12, r9] mov pc, lr i286_wb ldrb r2, [r9, #CPU_ITFBANK] orr r12, r0, #(&1c8000 - &0e8000) cmp r2, #0 streqb r1, [r0, r9] strneb r1, [r12, r9] mov pc, lr i286w_rb ldrb r2, [r9, #CPU_ITFBANK] tst r0, #1 bne i286w_rb_odd cmp r2, #0 orrne r0, r0, #VRAM_STEP ldrh r0, [r0, r9] mov pc, lr i286w_rb_odd cmp r2, #0 orrne r0, r0, #VRAM_STEP add r2, r0, #1 ldrb r0, [r0, r9] ldrb r1, [r2, r9] orr r0, r0, r1 lsl #8 mov pc, lr i286w_wb ldrb r2, [r9, #CPU_ITFBANK] tst r0, #1 bne i286w_wb_odd cmp r2, #0 addne r0, r0, #(&1c8000 - &0e8000) strh r1, [r0, r9] mov pc, lr i286w_wb_odd cmp r2, #0 addne r0, r0, #(&1c8000 - &0e8000) mov r3, r1 lsr #8 add r2, r0, #1 strb r1, [r0, r9] strb r3, [r2, r9] mov pc, lr ; ---- other i286_nonram_rw orr r0, r0, #&ff00 i286_nonram_r mov r0, #&ff i286w_wn i286_wn mov pc, lr ; ---- dispatch i286_memorymap ldr r3, i2mm_memfn and r1, r0, #1 adr r2, mmaptbl add r12, r2, r1 lsl #5 ldr r1, [r2, r1 lsl #5] ldr r2, [r12, #4] str r1, [r3, #((0 * 32) + (0xe8000 >> (15 - 2)))] str r1, [r3, #((0 * 32) + (0xf0000 >> (15 - 2)))] str r2, [r3, #((0 * 32) + (0xf8000 >> (15 - 2)))] ldr r1, [r12, #8] ldr r2, [r12, #12] str r1, [r3, #((4 * 32) + (0xd0000 >> (15 - 2)))] str r1, [r3, #((4 * 32) + (0xd8000 >> (15 - 2)))] str r2, [r3, #((4 * 32) + (0xe8000 >> (15 - 2)))] str r2, [r3, #((4 * 32) + (0xf0000 >> (15 - 2)))] str r2, [r3, #((4 * 32) + (0xf8000 >> (15 - 2)))] ldr r1, [r12, #16] ldr r2, [r12, #20] str r1, [r3, #((8 * 32) + (0xe8000 >> (15 - 2)))] str r1, [r3, #((8 * 32) + (0xf0000 >> (15 - 2)))] str r2, [r3, #((8 * 32) + (0xf8000 >> (15 - 2)))] ldr r1, [r12, #24] ldr r2, [r12, #28] str r1, [r3, #((12 * 32) + (0xd0000 >> (15 - 2)))] str r1, [r3, #((12 * 32) + (0xd8000 >> (15 - 2)))] str r2, [r3, #((12 * 32) + (0xe8000 >> (15 - 2)))] str r2, [r3, #((12 * 32) + (0xf0000 >> (15 - 2)))] str r2, [r3, #((12 * 32) + (0xf8000 >> (15 - 2)))] mov pc, lr i2mm_memfn dcd memfn mmaptbl dcd i286_rd ; NEC dcd i286_rb dcd i286_wn dcd i286_wn dcd i286w_rd dcd i286w_rb dcd i286_wn dcd i286_wn dcd i286_rb ; EPSON dcd i286_rb dcd i286_wt dcd i286_wb dcd i286w_rb dcd i286w_rb dcd i286w_wt dcd i286w_wb i286_vram_dispatch ldr r3, i2vd_memfn and r1, r0, #15 adr r2, vacctbl add r2, r2, r1 lsl #4 ldr r1, [r2] ldr r12, [r2, #4] tst r0, #&10 str r1, [r3, #((0 * 32) + (0xa8000 >> (15 - 2)))] str r1, [r3, #((0 * 32) + (0xb0000 >> (15 - 2)))] str r1, [r3, #((0 * 32) + (0xb8000 >> (15 - 2)))] strne r1, [r3, #((0 * 32) + (0xe0000 >> (15 - 2)))] str r12, [r3, #((4 * 32) + (0xa8000 >> (15 - 2)))] ldr r1, [r2, #8] str r12, [r3, #((4 * 32) + (0xb0000 >> (15 - 2)))] str r12, [r3, #((4 * 32) + (0xb8000 >> (15 - 2)))] strne r12, [r3, #((4 * 32) + (0xe0000 >> (15 - 2)))] str r1, [r3, #((8 * 32) + (0xa8000 >> (15 - 2)))] ldr r12, [r2, #12] str r1, [r3, #((8 * 32) + (0xb0000 >> (15 - 2)))] str r1, [r3, #((8 * 32) + (0xb8000 >> (15 - 2)))] strne r1, [r3, #((8 * 32) + (0xe0000 >> (15 - 2)))] str r12, [r3, #((12 * 32) + (0xa8000 >> (15 - 2)))] str r12, [r3, #((12 * 32) + (0xb0000 >> (15 - 2)))] str r12, [r3, #((12 * 32) + (0xb8000 >> (15 - 2)))] strne r12, [r3, #((12 * 32) + (0xe0000 >> (15 - 2)))] movne pc, lr adr r1, i286_nonram_r str r1, [r3, #((0 * 32) + (0xe0000 >> (15 - 2)))] adr r1, i286_wn str r1, [r3, #((4 * 32) + (0xe0000 >> (15 - 2)))] adr r1, i286_nonram_rw str r1, [r3, #((8 * 32) + (0xe0000 >> (15 - 2)))] adr r1, i286_wn str r1, [r3, #((12 * 32) + (0xe0000 >> (15 - 2)))] mov pc, lr i2vd_memfn dcd memfn vacctbl dcd vram_r0 ; 00 dcd vram_w0 dcd vramw_r0 dcd vramw_w0 dcd vram_r1 ; 10 dcd vram_w1 dcd vramw_r1 dcd vramw_w1 dcd vram_r0 ; 20 dcd vram_w0 dcd vramw_r0 dcd vramw_w0 dcd vram_r1 ; 30 dcd vram_w1 dcd vramw_r1 dcd vramw_w1 dcd vram_r0 ; 40 dcd vram_w0 dcd vramw_r0 dcd vramw_w0 dcd vram_r1 ; 50 dcd vram_w1 dcd vramw_r1 dcd vramw_w1 dcd vram_r0 ; 60 dcd vram_w0 dcd vramw_r0 dcd vramw_w0 dcd vram_r1 ; 70 dcd vram_w1 dcd vramw_r1 dcd vramw_w1 dcd grcg_tcr0 ; 80 dcd grcg_tdw0 dcd grcgw_tcr0 dcd grcgw_tdw0 dcd grcg_tcr1 ; 90 dcd grcg_tdw1 dcd grcgw_tcr1 dcd grcgw_tdw1 dcd egc_rd ; a0 dcd egc_wt dcd egcw_rd dcd egcw_wt dcd egc_rd ; b0 dcd egc_wt dcd egcw_rd dcd egcw_wt dcd vram_r0 ; c0 dcd grcg_rmw0 dcd vramw_r0 dcd grcgw_rmw0 dcd vram_r1 ; d0 dcd grcg_rmw1 dcd vramw_r1 dcd grcgw_rmw1 dcd egc_rd ; e0 dcd egc_wt dcd egcw_rd dcd egcw_wt dcd egc_rd ; f0 dcd egc_wt dcd egcw_rd dcd egcw_wt END