Difference between revisions of "SYS CDPosToInt"
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(Created page with "<font face='Courier New'> 0001f0c0: 90830000 lbu r3,0x0000(r4) 0001f0c4: 90860001 lbu r6,0x0001(r4) 0001f0c8: 00032902 srl r5,r3,0x04 0001f0cc: 00051080 sll r2,r5,0x02 ...") |
m (Talcall moved page 0001f0c0 - 0001f13c to SYS CDPosToInt) |
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<font face='Courier New'> | <font face='Courier New'> | ||
| + | r4: stack pointer to file header for file to load? | ||
| − | 0001f0c0: 90830000 lbu r3,0x0000(r4) | + | 0001f0c0: 90830000 lbu r3,0x0000(r4) #load minutes? |
| − | 0001f0c4: 90860001 lbu r6,0x0001(r4) | + | 0001f0c4: 90860001 lbu r6,0x0001(r4) #load seconds? |
0001f0c8: 00032902 srl r5,r3,0x04 | 0001f0c8: 00032902 srl r5,r3,0x04 | ||
0001f0cc: 00051080 sll r2,r5,0x02 | 0001f0cc: 00051080 sll r2,r5,0x02 | ||
| Line 22: | Line 23: | ||
0001f10c: 00651821 addu r3,r3,r5 | 0001f10c: 00651821 addu r3,r3,r5 | ||
0001f110: 00031100 sll r2,r3,0x04 | 0001f110: 00031100 sll r2,r3,0x04 | ||
| − | 0001f114: 90850002 lbu r5,0x0002(r4) | + | 0001f114: 90850002 lbu r5,0x0002(r4) #load sectors |
0001f118: 00431023 subu r2,r2,r3 | 0001f118: 00431023 subu r2,r2,r3 | ||
0001f11c: 00052102 srl r4,r5,0x04 | 0001f11c: 00052102 srl r4,r5,0x04 | ||
| Line 32: | Line 33: | ||
0001f134: 00431021 addu r2,r2,r3 | 0001f134: 00431021 addu r2,r2,r3 | ||
0001f138: 03e00008 jr r31 | 0001f138: 03e00008 jr r31 | ||
| − | 0001f13c: 2442ff6a addiu r2,r2,0xff6a | + | 0001f13c: 2442ff6a addiu r2,r2,0xff6a # returns LBA of file |
</font> | </font> | ||
Latest revision as of 10:04, 8 July 2023
r4: stack pointer to file header for file to load? 0001f0c0: 90830000 lbu r3,0x0000(r4) #load minutes? 0001f0c4: 90860001 lbu r6,0x0001(r4) #load seconds? 0001f0c8: 00032902 srl r5,r3,0x04 0001f0cc: 00051080 sll r2,r5,0x02 0001f0d0: 00451021 addu r2,r2,r5 0001f0d4: 00021040 sll r2,r2,0x01 0001f0d8: 3063000f andi r3,r3,0x000f 0001f0dc: 00431021 addu r2,r2,r3 0001f0e0: 00022900 sll r5,r2,0x04 0001f0e4: 00a22823 subu r5,r5,r2 0001f0e8: 00052880 sll r5,r5,0x02 0001f0ec: 00061902 srl r3,r6,0x04 0001f0f0: 00031080 sll r2,r3,0x02 0001f0f4: 00431021 addu r2,r2,r3 0001f0f8: 00021040 sll r2,r2,0x01 0001f0fc: 30c6000f andi r6,r6,0x000f 0001f100: 00461021 addu r2,r2,r6 0001f104: 00a22821 addu r5,r5,r2 0001f108: 00051880 sll r3,r5,0x02 0001f10c: 00651821 addu r3,r3,r5 0001f110: 00031100 sll r2,r3,0x04 0001f114: 90850002 lbu r5,0x0002(r4) #load sectors 0001f118: 00431023 subu r2,r2,r3 0001f11c: 00052102 srl r4,r5,0x04 0001f120: 00041880 sll r3,r4,0x02 0001f124: 00641821 addu r3,r3,r4 0001f128: 00031840 sll r3,r3,0x01 0001f12c: 30a5000f andi r5,r5,0x000f 0001f130: 00651821 addu r3,r3,r5 0001f134: 00431021 addu r2,r2,r3 0001f138: 03e00008 jr r31 0001f13c: 2442ff6a addiu r2,r2,0xff6a # returns LBA of file
