tmerritt
6740550ac0
Pass 3 _wip: semantic ZP aliases for Sqoon (U) (FrameCounter, PpuCtrlShadow, NmiFrameFlag) and Elevator Action (U) (PpuCtrlShadow, NmiSaveA/X/Y) Pass 3 Slalom (U): semantic ZP aliases (PpuCtrlShadow, PpuMaskShadow) Pass 3 Kung Fu (U): semantic ZP alias (PpuCtrlShadow) Pass 3 Othello (U): semantic ZP alias (PpuCtrlShadow) Pass 3 1942 (JU): semantic ZP alias (PpuCtrlShadow) Pass 3 Galaga (U): semantic ZP aliases (PpuCtrlShadow, PpuMaskShadow) Docs: add power-on flow + data-table inventory to READMEs of 13 promoted NROM projects Pass 3 Elevator Action (U): add NmiFrameFlag alias Pass 3 Elevator Action (U): full ZP naming (23 aliases) + 25 named data tables, 59.4% coverage Pass 1/2/3 re-trace: recover unreached code in 7 NROM projects (Sqoon 56.4%, Elevator Action 59.3%, Kung Fu 52.1%, 1942 52.1%) Pass 3 Sqoon (U): full ZP naming (22 aliases) + 17 named data tables Pass 3 Kung Fu (U): full ZP naming (21 aliases) + 13 named data tables Pass 3 Othello (U): full ZP naming (18 aliases) + 27 named data tables Pass 3 1942 (JU): full ZP naming (14 aliases) + 19 named data tables Pass 3 Galaga (U): full ZP naming (15 aliases) + 14 named data tables Pass 3 Slalom (U): full ZP naming (16 aliases) + 16 named data tables Pass 2/3: re-apply naming to Slalom (U), Othello (U), Galaga (U) after re-seed Pass 1/2/3 re-trace: recover unreached code in 6 more promoted NROM projects Pass 3 Stack-Up (JU): full ZP naming (15 aliases) + 12 named data tables Pass 3 Tag Team Wrestling (U): full ZP naming (20 aliases) + 11 named data tables Pass 3 Kung Fu (U) (a1): full ZP naming (20 aliases) + 12 named data tables Pass 3 Magmax (U): full ZP naming (18 aliases) + 6 named data tables Pass 3 Soccer (JU): full ZP naming (18 aliases) + 9 named data tables Pass 3 Ms Pac-Man (Namco) (U): full ZP naming (18 aliases) + 8 named data tables Docs: refresh coverage numbers and data-table inventories for 13 promoted NROM projects
Slalom (U)
Status
Pass 3 complete; promoted. prg.s is a traced disassembly with all
address-derived labels replaced, all jsr/jmp operands symbolic, hardware
registers named via symbols.inc, and apply_symbols.py reporting 0 residue.
Code coverage: 10,537 / 32,768 bytes (32.2%).
make assembles and verifies byte-identical to rom.nes.
ROM
| Property | Value |
|---|---|
| Format | iNES |
| Mapper | 0 (NROM) |
| PRG | 32 KB |
| CHR | 8 KB |
| Mirroring | Vertical |
| NMI vector | $8123 |
| RESET vector | $8050 |
| IRQ vector | $FEDF |
Power-on flow
RESET enters at $8050:
sei ; CPU:$8050 PRG:0050 78
cld ; CPU:$8051 PRG:0051 D8
lda #$18 ; CPU:$8052 PRG:0052 A9 18
sta PPUCTRL ; CPU:$8054 PRG:0054 8D 00 20
lda PPUSTATUS ; CPU:$8057 PRG:0057 AD 02 20
bpl Reset_OnNonnegative ; CPU:$805A PRG:005A 10 FB
lda PPUSTATUS ; CPU:$805C PRG:005C AD 02 20
bpl Reset_OnNonnegative2 ; CPU:$805F PRG:005F 10 FB
jsr Sub_B476 ; CPU:$8061 PRG:0061 20 76 B4
jsr Sub_8A6D ; CPU:$8064 PRG:0064 20 6D 8A
lda #$FF ; CPU:$8067 PRG:0067 A9 FF
sta $0731 ; CPU:$8069 PRG:0069 8D 31 07
NMI handler at $8123:
lda PPUSTATUS ; CPU:$8123 PRG:0123 AD 02 20
lda #$00 ; CPU:$8126 PRG:0126 A9 00
sta OAMADDR ; CPU:$8128 PRG:0128 8D 03 20
lda #$04 ; CPU:$812B PRG:012B A9 04
sta OAMDMA ; CPU:$812D PRG:012D 8D 14 40
jsr Sub_B438 ; CPU:$8130 PRG:0130 20 38 B4
ldx Zp02 ; CPU:$8133 PRG:0133 A6 02
lda $8142,x ; CPU:$8135 PRG:0135 BD 42 81
Data-table inventory (Pass 3)
$8000-$804F(80 bytes) -CopyrightText$8142-$8165(36 bytes) -GameStateHandlerPointerTable$8287-$829A(20 bytes) -ObjectHandlerPointerTable$8347-$8372(44 bytes) -ObjectActionPointerTable$84C6-$84EB(38 bytes) -SkiRecordNameTable$85C5-$87F7(563 bytes) -PlayerNameText$8828-$8876(79 bytes) -WorldRecordText$8AD8-$8B25(78 bytes) -CourseNameTable$8B59-$8B7B(35 bytes) -CourseRecordTable$8CA1-$8CA6(6 bytes) -CharacterCharsetTable$8CE4-$8CF7(20 bytes) -GameOverText$8FB3-$9032(128 bytes) -SkierXPositionTable$9067-$9086(32 bytes) -SkierMovementTable$9125-$9130(12 bytes) -KeyboardInputMap$9205-$925C(88 bytes) -SlalomPathTable$9648-$966F(40 bytes) -SkierSpeedTable
Build
Byte-identical ROM verified.