Difference between revisions of "Get unit data pointer"
Jump to navigation
Jump to search
(Created page with " Get unit data pointer? 001810d4: 2c820015 sltiu r2,r4,0x0015 (r4 = 10) < 15 001810d8: 1040000c beq r2,r0,0x0018110c Skip if ? 001810dc: 00002821 addu r5,r0,r0 001810e0:...") |
|||
| Line 1: | Line 1: | ||
Get unit data pointer? | Get unit data pointer? | ||
| − | 001810d4: 2c820015 sltiu r2,r4,0x0015 | + | 001810d4: 2c820015 sltiu r2,r4,0x0015 ID < 21 |
| − | 001810d8: 1040000c beq r2,r0,0x0018110c Skip if | + | 001810d8: 1040000c beq r2,r0,0x0018110c Skip if unit invalid |
| − | 001810dc: 00002821 addu r5,r0,r0 | + | 001810dc: 00002821 addu r5,r0,r0 return invalid r5 |
| − | 001810e0: 000410c0 sll r2,r4,0x03 | + | 001810e0: 000410c0 sll r2,r4,0x03 ID*8 |
| − | 001810e4: 00441023 subu r2,r2,r4 | + | 001810e4: 00441023 subu r2,r2,r4 ID*7 |
| − | 001810e8: 00021180 sll r2,r2,0x06 | + | 001810e8: 00021180 sll r2,r2,0x06 ID*0x1c0 |
001810ec: 3c038019 lui r3,0x8019 | 001810ec: 3c038019 lui r3,0x8019 | ||
001810f0: 246308cc addiu r3,r3,0x08cc unit data pointer | 001810f0: 246308cc addiu r3,r3,0x08cc unit data pointer | ||
| Line 13: | Line 13: | ||
00181100: 14620002 bne r3,r2,0x0018110c branch if unit ID != ff | 00181100: 14620002 bne r3,r2,0x0018110c branch if unit ID != ff | ||
00181104: 00000000 nop | 00181104: 00000000 nop | ||
| − | 00181108: 00002821 addu r5,r0,r0 clear r5 | + | 00181108: 00002821 addu r5,r0,r0 clear r5 if unit ID doesn't exist. |
0018110c: 03e00008 jr r31 | 0018110c: 03e00008 jr r31 | ||
Revision as of 09:47, 19 February 2022
Get unit data pointer? 001810d4: 2c820015 sltiu r2,r4,0x0015 ID < 21 001810d8: 1040000c beq r2,r0,0x0018110c Skip if unit invalid 001810dc: 00002821 addu r5,r0,r0 return invalid r5 001810e0: 000410c0 sll r2,r4,0x03 ID*8 001810e4: 00441023 subu r2,r2,r4 ID*7 001810e8: 00021180 sll r2,r2,0x06 ID*0x1c0 001810ec: 3c038019 lui r3,0x8019 001810f0: 246308cc addiu r3,r3,0x08cc unit data pointer 001810f4: 00432821 addu r5,r2,r3 r5 = current unit data pointer 001810f8: 90a30001 lbu r3,0x0001(r5) r3 = unit ID 001810fc: 340200ff ori r2,r0,0x00ff 00181100: 14620002 bne r3,r2,0x0018110c branch if unit ID != ff 00181104: 00000000 nop 00181108: 00002821 addu r5,r0,r0 clear r5 if unit ID doesn't exist. 0018110c: 03e00008 jr r31
