D00C lc/ffs?

[Wayno]

Isolating the code would be easy. Just take an OFT A01G rom, copy any different tables from a stock A01G to the OFT rom, then compare the two.

Adding handles to the code and finding room for it in the new format roms would be the problem. If it was easy they would have done it as part of releasing the OTS D00 roms.

[ztan]

Originally Posted by Wayno

Isolating the code would be easy. Just take an OFT A01G rom, copy any different tables from a stock A01G to the OFT rom, then compare the two.

Adding handles to the code and finding room for it in the new format roms would be the problem. If it was easy they would have done it as part of releasing the OTS D00 roms.

The hook for Launch Control in A01G is at 066344:

Original A01G:

ROM:00066344                 mov.l   #flt_10C524, r6 ; Loads value at 664a4 (10c524) into r6
ROM:00066344                                         ; 0664a4 hook for lc/ffs
ROM:00066346                 fmov.s  @r6, fr8        ; Loads value at r6 (7450) into fr8

OFT:

ROM:00066344                 mov.l   off_664A4, r2 ; loc_BAD00 ; Loads value at 664a4 (0bad00) into r6
ROM:00066346                 jsr/n   @R2             ; Jumps to new subroutine at 0BAD00
ROM:00066346                                         ; Rev limit returned in fr8

0BAD00 lookup revlimit for LC:

ROM:000BAD00 loc_BAD00:                              ; DATA XREF: ROM:00066344o
ROM:000BAD00                                         ; ROM:off_664A4o
ROM:000BAD00                 mov.l   @(h'3C,pc), r0  ; Move Immediate Long Data
ROM:000BAD02                 fmov.s  @r0, fr9        ; Floating-point move single precision
ROM:000BAD04                 mova    flt_BAD50, r0   ; Move Effective Address
ROM:000BAD06                 fmov.s  @r0, fr8        ; Floating-point move single precision
ROM:000BAD08                 mov.l   @(h'38,pc), r0  ; Move Immediate Long Data
ROM:000BAD0A                 mov.b   @r0, r0         ; Move Byte Data
ROM:000BAD0C                 cmp/eq  #1, r0          ; Compare: Equal
ROM:000BAD0E                 bf/s    loc_BAD1E       ; Branch of False with Delay Slot
ROM:000BAD10                 nop                     ; No Operation
ROM:000BAD12                 fcmp/gt fr9, fr8        ; Floating-point compare greater than
ROM:000BAD14                 bt/s    loc_BAD24       ; Branch if True with Delay Slot
ROM:000BAD16                 nop                     ; No Operation
ROM:000BAD18                 mova    off_BAD58, r0   ; Move Effective Address
ROM:000BAD1A                 bra     loc_BAD2C       ; Branch
ROM:000BAD1C                 nop                     ; No Operation
ROM:000BAD1E ; ---------------------------------------------------------------------------
ROM:000BAD1E
ROM:000BAD1E loc_BAD1E:                              ; CODE XREF: ROM:000BAD0Ej
ROM:000BAD1E                 fcmp/gt fr8, fr9        ; Floating-point compare greater than
ROM:000BAD20                 bt/s    loc_BAD2A       ; Branch if True with Delay Slot
ROM:000BAD22                 nop                     ; No Operation
ROM:000BAD24
ROM:000BAD24 loc_BAD24:                              ; CODE XREF: ROM:000BAD14j
ROM:000BAD24                 mova    flt_BAD54, r0   ; Move Effective Address
ROM:000BAD26                 bra     loc_BAD2C       ; Branch
ROM:000BAD28                 nop                     ; No Operation
ROM:000BAD2A ; ---------------------------------------------------------------------------
ROM:000BAD2A
ROM:000BAD2A loc_BAD2A:                              ; CODE XREF: ROM:000BAD20j
ROM:000BAD2A                 mova    off_BAD4C, r0 ; byte_0 ; Move Effective Address
ROM:000BAD2C
ROM:000BAD2C loc_BAD2C:                              ; CODE XREF: ROM:000BAD1Aj
ROM:000BAD2C                                         ; ROM:000BAD26j
ROM:000BAD2C                 fmov.s  @r0, fr8        ; Floating-point move single precision
ROM:000BAD2E                 fadd    fr8, fr14       ; Floating-point add
ROM:000BAD30                 mov.l   @(dword_14,pc), r6 ; Move Immediate Long Data
ROM:000BAD32                 fmov.s  @r6, fr8        ; Floating-point move single precision
ROM:000BAD34                 rts/n                   ; Return from Subroutine with No delay slot
ROM:000BAD36 ; ---------------------------------------------------------------------------
ROM:000BAD36                 nop                     ; No Operation
ROM:000BAD38                 nop                     ; No Operation
ROM:000BAD3A                 nop                     ; No Operation
ROM:000BAD3C                 nop                     ; No Operation
ROM:000BAD3E                 nop                     ; No Operation
ROM:000BAD3E ; ---------------------------------------------------------------------------
ROM:000BAD40                 .data.l RAM_VEH_Speed
ROM:000BAD44                 .data.l unk_FFF8939B
ROM:000BAD48                 .data.l flt_10C524      ; Rev limiter ref
ROM:000BAD4C off_BAD4C:      .data.l byte_0          ; DATA XREF: ROM:loc_BAD2Ao
ROM:000BAD50 flt_BAD50:      .float 10.0             ; DATA XREF: ROM:000BAD04o
ROM:000BAD54 flt_BAD54:      .float 2000.0           ; DATA XREF: ROM:loc_BAD24o
ROM:000BAD58 off_BAD58:      .float byte_0           ; DATA XREF: ROM:000BAD18o