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This commit is contained in:
jeffman 2019-08-05 20:19:59 -04:00
parent 99259a016e
commit 7fe3575018
2 changed files with 292 additions and 1 deletions
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2
notes/m2-fileselect.txt
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@ -35,4 +35,4 @@ but we need at least 41:
"Text speed: Medium" 18
= 41
~8001EAE: file slot number formatting
However, the game allocates 32 bytes per row per file slot, which is actually 64 total, so we should be ok.

291
notes/m2-sub1E30.txt Normal file
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@ -0,0 +1,291 @@
// Format file select strings
// r0: file select struct
08001E30 (T) push r4-r7,r14
08001E32 (T) mov r7,r10
08001E34 (T) mov r6,r9
08001E36 (T) mov r5,r8
08001E38 (T) push r5-r7
08001E3A (T) add sp,-1Ch
08001E3C (T) mov r7,r0
08001E3E (T) mov r0,r13
08001E40 (T) ldr r1,=80FC454h
08001E42 (T) ldmia [r1]!,r2-r4
08001E44 (T) stmia [r0]!,r2-r4
08001E46 (T) mov r1,0h
08001E48 (T) ldsh r0,[r7,r1] // 0 if file exists, -1 otherwise
08001E4A (T) cmp r0,0h
08001E4C (T) bge 8001E5Ch
08001E4E (T) mov r0,r7
08001E50 (T) bl 8001DC8h // presumably this formats the Start New Game string
08001E54 (T) b 8002062h
08001E56 (T) lsl r0,r0,0h
08001E58 (T) stmia [r4]!,r2,r4,r6
08001E5A (T) lsr r7,r1,20h
08001E5C (T) mov r4,0h
08001E5E (T) ldr r2,=205h
08001E60 (T) add r2,r2,r7
08001E62 (T) mov r9,r2 // address of file number colon (1st row)
08001E64 (T) ldr r3,=225h
08001E66 (T) add r3,r3,r7
08001E68 (T) mov r10,r3 // address of file number colon (2nd row)
08001E6A (T) ldr r0,=206h
08001E6C (T) add r0,r7,r0
08001E6E (T) str r0,[sp,0Ch] // address of space after colon (1st)
08001E70 (T) ldr r1,=226h
08001E72 (T) add r1,r7,r1
08001E74 (T) str r1,[sp,14h] // address of space after colon (2nd)
08001E76 (T) ldr r2,=207h
08001E78 (T) add r2,r7,r2
08001E7A (T) str r2,[sp,10h] // address of ness' name (1st)
08001E7C (T) ldr r3,=227h
08001E7E (T) add r3,r7,r3
08001E80 (T) str r3,[sp,18h] // address of ness' name (2nd)
08001E82 (T) mov r0,0Ch
08001E84 (T) add r0,r0,r7
08001E86 (T) mov r8,r0 // address of ness' name (source string)
08001E88 (T) mov r1,89h
08001E8A (T) lsl r1,r1,2h
08001E8C (T) add r5,r7,r1 // address of 2nd row
// Fill second row (32 bytes) with spaces
08001E8E (T) bl 80057B0h // literally just returns a space (0x4D)
08001E92 (T) add r1,r5,r4
08001E94 (T) strb r0,[r1]
08001E96 (T) add r4,1h
08001E98 (T) cmp r4,1Fh
08001E9A (T) ble 8001E8Eh
// Format file slot number
08001E9C (T) mov r2,81h
08001E9E (T) lsl r2,r2,2h
08001EA0 (T) add r5,r7,r2 // address of 1st row
08001EA2 (T) mov r3,89h
08001EA4 (T) lsl r3,r3,2h
08001EA6 (T) add r6,r7,r3 // address of 2nd row
08001EA8 (T) mov r4,2h
08001EAA (T) ldsh r0,[r7,r4] // file slot index (0-2)
08001EAC (T) add r0,1h
08001EAE (T) bl 80057A8h // format number (1 -> E1)
08001EB2 (T) strb r0,[r5]
08001EB4 (T) mov r5,r9
08001EB6 (T) mov r1,2h
08001EB8 (T) ldsh r0,[r7,r1]
08001EBA (T) add r0,1h
08001EBC (T) bl 80057A8h // literally doing exactly what it just did...
08001EC0 (T) strb r0,[r6]
// Format colon
08001EC2 (T) mov r6,r10
08001EC4 (T) ldr r4,=80FC438h
08001EC6 (T) mov r0,r4
08001EC8 (T) bl 80057B4h // some weird jump table that ultimately returns a colon tile (EE)
08001ECC (T) strb r0,[r5]
08001ECE (T) ldr r5,[sp,0Ch]
08001ED0 (T) mov r0,r4
08001ED2 (T) bl 80057B4h
08001ED6 (T) strb r0,[r6]
// Format space after colon
08001ED8 (T) ldr r6,[sp,14h]
08001EDA (T) bl 80057B0h
08001EDE (T) strb r0,[r5]
08001EE0 (T) ldr r5,[sp,10h]
08001EE2 (T) bl 80057B0h
08001EE6 (T) strb r0,[r6]
// Format Ness' name (1st row)
08001EE8 (T) ldr r6,[sp,18h] // address of ness' name (dest)
08001EEA (T) mov r4,0h
08001EEC (T) mov r2,r8
08001EEE (T) add r0,r2,r4 // address of ness' name (source); struct+0xC
08001EF0 (T) ldrb r1,[r0]
08001EF2 (T) mov r0,r1
08001EF4 (T) cmp r0,0FFh
08001EF6 (T) bne 8001F1Ch
// If 0xFF: write a space
08001EF8 (T) bl 80057B0h
08001EFC (T) strb r0,[r5]
08001EFE (T) b 8001F1Eh
08001F00 (T) lsl r5,r0,8h
08001F02 (T) lsl r0,r0,0h
08001F04 (T) lsl r5,r4,8h
08001F06 (T) lsl r0,r0,0h
08001F08 (T) lsl r6,r0,8h
08001F0A (T) lsl r0,r0,0h
08001F0C (T) lsl r6,r4,8h
08001F0E (T) lsl r0,r0,0h
08001F10 (T) lsl r7,r0,8h
08001F12 (T) lsl r0,r0,0h
08001F14 (T) lsl r7,r4,8h
08001F16 (T) lsl r0,r0,0h
08001F18 (T) stmia [r4]!,r3-r5
08001F1A (T) lsr r7,r1,20h
// Else: format the letter
08001F1C (T) strb r1,[r5]
08001F1E (T) add r5,1h
08001F20 (T) add r4,1h
08001F22 (T) cmp r4,4h
08001F24 (T) ble 8001EECh
// Format Ness' name (2nd row) + put spaces after both rows
08001F26 (T) mov r4,0h
08001F28 (T) ldrb r0,[r7,0Ch]
08001F2A (T) cmp r0,0FFh
08001F2C (T) beq 8001F44h
08001F2E (T) mov r1,r8
08001F30 (T) ldrb r0,[r1]
08001F32 (T) strb r0,[r6]
08001F34 (T) add r6,1h
08001F36 (T) add r1,1h
08001F38 (T) add r4,1h
08001F3A (T) cmp r4,4h
08001F3C (T) bgt 8001F44h
08001F3E (T) ldrb r0,[r1]
08001F40 (T) cmp r0,0FFh
08001F42 (T) bne 8001F30h
08001F44 (T) bl 80057B0h
08001F48 (T) strb r0,[r5]
08001F4A (T) add r5,1h
08001F4C (T) bl 80057B0h
08001F50 (T) strb r0,[r6]
08001F52 (T) add r6,1h
// Format "Level:" string (weirdly, it puts it at different spots in the two rows... bug?)
08001F54 (T) ldr r4,=80FC460h
08001F56 (T) mov r0,r4
08001F58 (T) bl 80057B4h
08001F5C (T) strb r0,[r5]
08001F5E (T) add r5,1h
08001F60 (T) mov r0,r4
08001F62 (T) bl 80057B4h
08001F66 (T) strb r0,[r6]
08001F68 (T) add r6,1h
08001F6A (T) ldr r4,=80FC464h
08001F6C (T) mov r0,r4
08001F6E (T) bl 80057B4h
08001F72 (T) strb r0,[r5]
08001F74 (T) add r5,1h
08001F76 (T) mov r0,r4
08001F78 (T) bl 80057B4h
08001F7C (T) strb r0,[r6]
08001F7E (T) add r6,1h
08001F80 (T) ldr r4,=80FC468h
08001F82 (T) mov r0,r4
08001F84 (T) bl 80057B4h
08001F88 (T) strb r0,[r5]
08001F8A (T) add r5,1h
08001F8C (T) mov r0,r4
08001F8E (T) bl 80057B4h
08001F92 (T) strb r0,[r6]
08001F94 (T) add r6,1h
08001F96 (T) ldr r4,=80FC438h
08001F98 (T) mov r0,r4
08001F9A (T) bl 80057B4h
08001F9E (T) strb r0,[r5]
08001FA0 (T) add r5,1h
08001FA2 (T) mov r0,r4
08001FA4 (T) bl 80057B4h
08001FA8 (T) strb r0,[r6]
08001FAA (T) add r6,1h
// Format level
08001FAC (T) ldrb r3,[r7,0Ah] // level
08001FAE (T) mov r8,r3
08001FB0 (T) mov r0,r8
08001FB2 (T) mov r1,0Ah
08001FB4 (T) bl 80F4A70h
08001FB8 (T) mov r8,r0 // ones digit
08001FBA (T) ldrb r0,[r7,0Ah]
08001FBC (T) mov r1,0Ah
08001FBE (T) bl m2_div
08001FC2 (T) mov r4,r0 // tens digit
08001FC4 (T) cmp r4,0h
08001FC6 (T) beq 8001FE8h
// If level is greater than nine: print tens digit
08001FC8 (T) bl 80057A8h
08001FCC (T) strb r0,[r5]
08001FCE (T) add r5,1h
08001FD0 (T) mov r0,r4
08001FD2 (T) bl 80057A8h
08001FD6 (T) b 8001FF4h
08001FD8 (T) stmia [r4]!,r5,r6
08001FDA (T) lsr r7,r1,20h
08001FDC (T) stmia [r4]!,r2,r5,r6
08001FDE (T) lsr r7,r1,20h
08001FE0 (T) stmia [r4]!,r3,r5,r6
08001FE2 (T) lsr r7,r1,20h
08001FE4 (T) stmia [r4]!,r3-r5
08001FE6 (T) lsr r7,r1,20h
// Else: print space
08001FE8 (T) bl 80057B0h
08001FEC (T) strb r0,[r5]
08001FEE (T) add r5,1h
08001FF0 (T) bl 80057B0h
// Print tens digit (2nd row)
08001FF4 (T) strb r0,[r6]
// Print tens digit
08001FF6 (T) add r6,1h
08001FF8 (T) mov r0,r8
08001FFA (T) bl 80057A8h
08001FFE (T) strb r0,[r5]
08002000 (T) add r5,1h
08002002 (T) mov r0,r8
08002004 (T) bl 80057A8h
08002008 (T) strb r0,[r6]
// Print "Text speed:"
0800200A (T) bl 80057B0h
0800200E (T) strb r0,[r5]
08002010 (T) add r5,1h
08002012 (T) ldr r0,=80FC46Ch
08002014 (T) bl 80057B4h
08002018 (T) strb r0,[r5]
0800201A (T) add r5,1h
0800201C (T) ldr r0,=80FC470h
0800201E (T) bl 80057B4h
08002022 (T) strb r0,[r5]
08002024 (T) add r5,1h
08002026 (T) ldr r0,=80FC474h
08002028 (T) bl 80057B4h
0800202C (T) strb r0,[r5]
0800202E (T) add r5,1h
08002030 (T) ldr r0,=80FC478h
08002032 (T) bl 80057B4h
08002036 (T) strb r0,[r5]
08002038 (T) add r5,1h
0800203A (T) ldr r0,=80FC438h
0800203C (T) bl 80057B4h
08002040 (T) strb r0,[r5]
08002042 (T) add r5,1h
// Print speed
08002044 (T) mov r4,0h
08002046 (T) mov r1,4h
08002048 (T) ldsh r0,[r7,r1]
0800204A (T) lsl r0,r0,2h
0800204C (T) add r0,r13
0800204E (T) lsl r1,r4,1h
08002050 (T) ldr r0,[r0]
08002052 (T) add r0,r0,r1
08002054 (T) bl 80057B4h
08002058 (T) strb r0,[r5]
0800205A (T) add r5,1h
0800205C (T) add r4,1h
0800205E (T) cmp r4,2h
08002060 (T) ble 8002046h
08002062 (T) add sp,1Ch
08002064 (T) pop r3-r5
08002066 (T) mov r8,r3
08002068 (T) mov r9,r4
0800206A (T) mov r10,r5
0800206C (T) pop r4-r7
0800206E (T) pop r0
08002070 (T) bx r0