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mcd, some cleanup, fix Word-RAM in 2M mode

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This commit is contained in:
kub 2023-05-10 22:20:06 +00:00
parent 02db230830
commit 8eeb342641
7 changed files with 227 additions and 75 deletions
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6
pico/cd/memory_arm.S
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@ -181,6 +181,7 @@ m_m68k_read8_r02:
m_m68k_read8_r03:
add r1, r1, #0x110000
stmfd sp!, {r1, lr}
bic r0, r0, #1
bl m68k_comm_check
ldmfd sp!, {r1, lr}
ldrb r0, [r1, #3]
@ -223,6 +224,7 @@ m_m68k_read8_hi:
bxge lr
add r1, r1, r0
stmfd sp!, {r1, lr}
bic r0, r0, #1
bl m68k_comm_check
ldmfd sp!, {r1, lr}
ldrb r0, [r1]
@ -378,10 +380,10 @@ m_m68k_write16_regs:
beq m_m68k_write16_regs_spec
and r3, r1, #0xff
add r2, r0, #1
stmfd sp!,{r2,r3,lr}
stmfd sp!,{r2,r3,r12,lr}
mov r1, r1, lsr #8
bl m68k_reg_write8
ldmfd sp!,{r0,r1,lr}
ldmfd sp!,{r0,r1,r12,lr}
b m68k_reg_write8
m_m68k_write16_regs_spec: @ special case