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updated EEPROM code, gmv fixed

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@249 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-09-16 15:44:18 +00:00
parent 32826a1a22
commit 1dceadaee4
14 changed files with 306 additions and 170 deletions
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30
Pico/Memory.s
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@ -435,6 +435,19 @@ m_read8_ram:
bx lr
m_read8_above_rom:
@ might still be SRam (Micro Machines, HardBall '95)
ldr r2, =(SRam)
ldr r3, =(Pico+0x22200)
ldr r1, [r2, #8] @ SRam.end
cmp r0, r1
bgt m_read8_ar_nosram
ldr r1, [r2, #4] @ SRam.start
cmp r0, r1
blt m_read8_ar_nosram
ldrb r1, [r3, #0x11] @ Pico.m.sram_reg
tst r1, #5
bne SRAMRead
m_read8_ar_nosram:
stmfd sp!,{r0,lr}
bic r0, r0, #1
mov r1, #8
@ -566,7 +579,24 @@ m_read16_ram:
bx lr
m_read16_above_rom:
@ might still be SRam
ldr r2, =(SRam)
ldr r3, =(Pico+0x22200)
ldr r1, [r2, #8] @ SRam.end
bic r0, r0, #1
cmp r0, r1
bgt m_read16_ar_nosram
ldr r1, [r2, #4] @ SRam.start
cmp r0, r1
blt m_read16_ar_nosram
ldrb r1, [r3, #0x11] @ Pico.m.sram_reg
tst r1, #5
beq m_read16_ar_nosram
stmfd sp!,{lr}
bl SRAMRead
orr r0, r0, r0, lsl #8
ldmfd sp!,{pc}
m_read16_ar_nosram:
mov r1, #16
b OtherRead16End