xmil/adv/vram/makemix2.s - view

File: [RetroPC.NET] / xmil / adv / vram / makemix2.s
Revision 1.1: download - view: text, annotated - select for diffs
Fri Feb 4 15:42:10 2005 JST (20 years, 8 months ago) by yui
Branches: MAIN
CVS tags: HEAD

RetroPC CVS restarting 2005/02/04 (T.Yui)

.include "./vram/makescrn.inc" .global makemix_mixstep .global makemix_mixtext40 .global makemix_mixgrph40 .global makemix_mixtext80 .global makemix_mixgrph80 @ .global to256colex .section .iwram.text .code 32 .align 0 @ col2tbl: .word to256colex textmask: .word 0x07070707 240: add r0, r0, #240 480: add r0, r0, #480 makemix_mixstep: cmp r0, #0 ldreq r1, 240b ldrne r1, 480b str r1, 2401f str r1, 2402f str r1, 2403f str r1, 2404f mov pc, lr makemix_mixtext40: stmdb sp!, {r5 - r7, lr} adr r5, to256colex ldr lr, textmask 1: ldr r6, [r0, #0] ldr r7, [r0, #4] ldrb r12, [r1] bic r6, r6, lr ldr r12, [r5, r12, lsl #2] bic r7, r7, lr and r3, r12, lr @ bit0 and r12, r12, lr, lsl #1 @ bit3 orr r6, r6, r3 ldrb r3, [r1, #(MAKETEXT_ROW * 1)] orr r7, r7, r12, lsr #3 ldr r3, [r5, r3, lsl #2] add r1, r1, #1 and r12, r3, lr @ bit0 and r3, r3, lr, lsl #1 @ bit3 orr r6, r6, r12, lsl #1 ldrb r12, [r1, #((MAKETEXT_ROW * 2) - 1)] orr r7, r7, r3, lsr #2 ldr r12, [r5, r12, lsl #2] and r3, r12, lr @ bit0 and r12, r12, lr, lsl #1 @ bit3 orr r6, r6, r3, lsl #2 orr r7, r7, r12, lsr #1 subs r2, r2, #1 str r6, [r0, #0] str r7, [r0, #4] 2401: add r0, r0, #240 bne 1b ldmia sp!, {r5 - r7, pc} makemix_mixgrph40: stmdb sp!, {r5 - r7, lr} adr r5, to256colex ldr lr, textmask 1: ldr r6, [r0, #0] ldr r7, [r0, #4] ldrb r12, [r1] and r6, r6, lr and r7, r7, lr ldr r12, [r5, r12, lsl #2] add r1, r1, #0x4000 and r3, r12, lr @ bit0 and r12, r12, lr, lsl #1 @ bit3 orr r6, r6, r3, lsl #3 ldrb r3, [r1] orr r7, r7, r12 ldr r3, [r5, r3, lsl #2] add r1, r1, #0x4000 and r12, r3, lr @ bit0 and r3, r3, lr, lsl #1 @ bit3 orr r6, r6, r12, lsl #4 ldrb r12, [r1] orr r7, r7, r3, lsl #1 ldr r12, [r5, r12, lsl #2] and r3, r12, lr @ bit0 and r12, r12, lr, lsl #1 @ bit3 orr r6, r6, r3, lsl #5 orr r7, r7, r12, lsl #2 add r1, r1, #0x0800 @ VRAM alignが 64KBなので bic r1, r1, #0xc000 @ こんなロジック… str r6, [r0, #0] str r7, [r0, #4] subs r2, r2, #1 2402: add r0, r0, #240 bne 1b ldmia sp!, {r5 - r7, pc} makemix_mixtext80: stmdb sp!, {r5 - r8, lr} adr r5, to256colex ldr lr, textmask mov r8, #0xa000 1: ldr r6, [r0, #0] ldr r7, [r0, r8] ldrb r12, [r1] bic r6, r6, lr ldr r12, [r5, r12, lsl #2] bic r7, r7, lr and r3, r12, lr, lsl #4 @ bit4 and r12, r12, lr, lsl #5 @ bit7 orr r6, r6, r3, lsr #4 ldrb r3, [r1, #(MAKETEXT_ROW * 1)] orr r7, r7, r12, lsr #7 ldr r3, [r5, r3, lsl #2] add r1, r1, #1 and r12, r3, lr, lsl #4 @ bit4 and r3, r3, lr, lsl #5 @ bit7 orr r6, r6, r12, lsr #3 ldrb r12, [r1, #((MAKETEXT_ROW * 2) - 1)] orr r7, r7, r3, lsr #6 ldr r12, [r5, r12, lsl #2] and r3, r12, lr, lsl #4 @ bit0 and r12, r12, lr, lsl #5 @ bit7 orr r6, r6, r3, lsr #2 orr r7, r7, r12, lsr #5 subs r2, r2, #1 str r6, [r0, #0] str r7, [r0, r8] 2403: add r0, r0, #240 bne 1b ldmia sp!, {r5 - r8, pc} makemix_mixgrph80: stmdb sp!, {r5 - r8, lr} adr r5, to256colex ldr lr, textmask mov r8, #0xa000 1: ldr r6, [r0, #0] ldr r7, [r0, r8] ldrb r12, [r1] and r6, r6, lr and r7, r7, lr ldr r12, [r5, r12, lsl #2] add r1, r1, #0x4000 and r3, r12, lr, lsl #4 @ bit4 and r12, r12, lr, lsl #5 @ bit7 orr r6, r6, r3, lsr #1 @ 4->3 ldrb r3, [r1] orr r7, r7, r12, lsr #4 @ 7->3 ldr r3, [r5, r3, lsl #2] add r1, r1, #0x4000 and r12, r3, lr, lsl #4 @ bit4 and r3, r3, lr, lsl #5 @ bit7 orr r6, r6, r12 @ 4->4 ldrb r12, [r1] orr r7, r7, r3, lsr #3 @ 7->4 ldr r12, [r5, r12, lsl #2] and r3, r12, lr, lsl #4 @ bit4 and r12, r12, lr, lsl #5 @ bit7 orr r6, r6, r3, lsl #1 @ 4->5 orr r7, r7, r12, lsr #2 @ 7->5 add r1, r1, #0x0800 @ VRAM alignが 64KBなので bic r1, r1, #0xc000 @ こんなロジック… str r6, [r0, #0] str r7, [r0, r8] subs r2, r2, #1 2404: add r0, r0, #240 bne 1b ldmia sp!, {r5 - r8, pc} to256colex: .word 0x00000000, 0x18000000, 0x80080000, 0x98080000 .word 0x00800800, 0x18800800, 0x80880800, 0x98880800 .word 0x00100008, 0x18100008, 0x80180008, 0x98180008 .word 0x00900808, 0x18900808, 0x80980808, 0x98980808 .word 0x01001000, 0x19001000, 0x81081000, 0x99081000 .word 0x01801800, 0x19801800, 0x81881800, 0x99881800 .word 0x01101008, 0x19101008, 0x81181008, 0x99181008 .word 0x01901808, 0x19901808, 0x81981808, 0x99981808 .word 0x00018000, 0x18018000, 0x80098000, 0x98098000 .word 0x00818800, 0x18818800, 0x80898800, 0x98898800 .word 0x00118008, 0x18118008, 0x80198008, 0x98198008 .word 0x00918808, 0x18918808, 0x80998808, 0x98998808 .word 0x01019000, 0x19019000, 0x81099000, 0x99099000 .word 0x01819800, 0x19819800, 0x81899800, 0x99899800 .word 0x01119008, 0x19119008, 0x81199008, 0x99199008 .word 0x01919808, 0x19919808, 0x81999808, 0x99999808 .word 0x00000180, 0x18000180, 0x80080180, 0x98080180 .word 0x00800980, 0x18800980, 0x80880980, 0x98880980 .word 0x00100188, 0x18100188, 0x80180188, 0x98180188 .word 0x00900988, 0x18900988, 0x80980988, 0x98980988 .word 0x01001180, 0x19001180, 0x81081180, 0x99081180 .word 0x01801980, 0x19801980, 0x81881980, 0x99881980 .word 0x01101188, 0x19101188, 0x81181188, 0x99181188 .word 0x01901988, 0x19901988, 0x81981988, 0x99981988 .word 0x00018180, 0x18018180, 0x80098180, 0x98098180 .word 0x00818980, 0x18818980, 0x80898980, 0x98898980 .word 0x00118188, 0x18118188, 0x80198188, 0x98198188 .word 0x00918988, 0x18918988, 0x80998988, 0x98998988 .word 0x01019180, 0x19019180, 0x81099180, 0x99099180 .word 0x01819980, 0x19819980, 0x81899980, 0x99899980 .word 0x01119188, 0x19119188, 0x81199188, 0x99199188 .word 0x01919988, 0x19919988, 0x81999988, 0x99999988 .word 0x00000011, 0x18000011, 0x80080011, 0x98080011 .word 0x00800811, 0x18800811, 0x80880811, 0x98880811 .word 0x00100019, 0x18100019, 0x80180019, 0x98180019 .word 0x00900819, 0x18900819, 0x80980819, 0x98980819 .word 0x01001011, 0x19001011, 0x81081011, 0x99081011 .word 0x01801811, 0x19801811, 0x81881811, 0x99881811 .word 0x01101019, 0x19101019, 0x81181019, 0x99181019 .word 0x01901819, 0x19901819, 0x81981819, 0x99981819 .word 0x00018011, 0x18018011, 0x80098011, 0x98098011 .word 0x00818811, 0x18818811, 0x80898811, 0x98898811 .word 0x00118019, 0x18118019, 0x80198019, 0x98198019 .word 0x00918819, 0x18918819, 0x80998819, 0x98998819 .word 0x01019011, 0x19019011, 0x81099011, 0x99099011 .word 0x01819811, 0x19819811, 0x81899811, 0x99899811 .word 0x01119019, 0x19119019, 0x81199019, 0x99199019 .word 0x01919819, 0x19919819, 0x81999819, 0x99999819 .word 0x00000191, 0x18000191, 0x80080191, 0x98080191 .word 0x00800991, 0x18800991, 0x80880991, 0x98880991 .word 0x00100199, 0x18100199, 0x80180199, 0x98180199 .word 0x00900999, 0x18900999, 0x80980999, 0x98980999 .word 0x01001191, 0x19001191, 0x81081191, 0x99081191 .word 0x01801991, 0x19801991, 0x81881991, 0x99881991 .word 0x01101199, 0x19101199, 0x81181199, 0x99181199 .word 0x01901999, 0x19901999, 0x81981999, 0x99981999 .word 0x00018191, 0x18018191, 0x80098191, 0x98098191 .word 0x00818991, 0x18818991, 0x80898991, 0x98898991 .word 0x00118199, 0x18118199, 0x80198199, 0x98198199 .word 0x00918999, 0x18918999, 0x80998999, 0x98998999 .word 0x01019191, 0x19019191, 0x81099191, 0x99099191 .word 0x01819991, 0x19819991, 0x81899991, 0x99899991 .word 0x01119199, 0x19119199, 0x81199199, 0x99199199 .word 0x01919999, 0x19919999, 0x81999999, 0x99999999 .end