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4cade/src/4cade.init.a
4am 78459d31a6 4.0-alpha.3 release
2020-08-28 13:39:13 -04:00

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;license:MIT
;(c) 2018-2020 by 4am
;
; first-run initialization code
;
; This file is included directly and is run from $2000/main as soon as the
; .SYSTEM file is loaded
;
+READ_ROM_NO_WRITE
sta PRIMARYCHARSET
sta CLR80VID
sta STOREOFF
sta READMAINMEM
sta WRITEMAINMEM
jsr ROM_TEXT
jsr ROM_HOME
jsr ROM_NORMAL
jsr ROM_IN0
jsr ROM_PR0
jsr Has64K ; check for 64K (required)
bcc +
ldy #@no64Klen
- lda @s_no64K,y
sta $6B6,y
dey
bpl -
@hang bmi @hang
@s_no64K !scrxor $80,"REQUIRES 64K"
@no64Klen=(*-@s_no64K)-1
+
lda #0
sta zpMachineStatus
sta SETC3ROM
jsr HasVidHDCard ; check for VidHD card (allows super hi-res artwork even on non-IIgs machines)
sta CLRC3ROM
ror zpMachineStatus
lda ROM_MACHINEID
cmp #$06
bne @NotGS
sec
jsr $FE1F ; check for IIgs (allows super hi-res artwork)
bcs @NotGS
sec
+HIDE_NEXT_BYTE
@NotGS clc
ror zpMachineStatus
jsr Has128K ; check for 128K (allows DHGR slideshows and 128K games)
ror zpMachineStatus
jsr HasJoystick ; check for joystick (absence is OK but we filter out some games that require a joystick)
ror zpMachineStatus
; now bit 4 = 1 if VidHD
; bit 5 = 1 if IIgs
; bit 6 = 1 if 128K
; bit 7 = 1 if joystick
; and all other bits are 0 (we'll set bit 3 after copying it to LC RAM)
; accommodate uppercase-only machines (64K ][+ is supported)
lda ROM_MACHINEID
cmp #$A0
beq + ; Spectrum ED
cmp #$06
beq +
lda #$DF
+HIDE_NEXT_2_BYTES
+ lda #$FF
sta zpCharMask
; print text title in same place as graphical title will appear
ldy #8
- lda TOTAL,y
ora #$80
sta $04B7,y
dey
bpl -
ldy #10
- lda REPLAY,y
ora #$80
sta $0536,y
dey
bpl -
; increase text window width so we can print to the edge of the screen without scrolling
inc $21
; print version or build number in lower right corner
ldx #30
ldy #23
jsr SetCursorPosition
+LDADDR LoadingVersion
jsr LoadingPrint
!ifndef RELEASE {
lda LoadingBuild
ldx LoadingBuild+1
ldy #0
jsr PrintAsDecimal
}
; set up text window so it only covers lower left corner
lda #30
sta $21
lda #19
sta $22
; print machine configuration in lower left corner
ldx #0
ldy #23
jsr SetCursorPosition
; if zpMachineStatus AND IS_IIGS then print 'IIgs'
; else if zpMachineStatus AND HAS_128K then print '128K'
; else print '64K'
lda zpMachineStatus
and #IS_IIGS
beq +
+LDADDR LoadingIIgs
bne @printMem
+ lda zpMachineStatus
and #HAS_128K
beq +
+LDADDR Loading128K
bne @printMem
+
+LDADDR Loading64K
@printMem
jsr LoadingPrint
; if zpMachineStatus AND HAS_JOYSTICK then CR & print 'joystick'
lda zpMachineStatus
and #HAS_JOYSTICK
beq +
jsr LoadingCR
+LDADDR LoadingJoystick
jsr LoadingPrint
+
; if zpMachineStatus AND HAS_VIDHD then CR & print 'VidHD'
lda zpMachineStatus
and #HAS_VIDHD
beq +
jsr LoadingCR
+LDADDR LoadingVidHD
jsr LoadingPrint
+
@Relocate
; if zpMachineStatus AND IS_IIGS then check for CFFA
; before performing any further disk access
lda zpMachineStatus
and #IS_IIGS
beq +
jsr HackThaCFFA
+
+READ_ROM_WRITE_RAM2
jsr init ; initialize and relocate ProRWTS2 to $D400 in RAM bank 2
; ProRWTS2 disk-data live at $D000-D3FF
ldx #$00 ; relocate program code to top of language card
; since we end at $0000 now, adjust low offset to avoid destroying zpage
@FM lda FirstMover - (RELBASE & $FF),x
sta RELBASE & $FF00,x
inx
bne @FM
inc @FM+2
inc @FM+5
bne @FM
ldy #>(255 + EvenLasterMover - LastMover)
@LM lda COPYSRC,x ; relocate pseudo-ProDOS to RAM bank 2
sta COPYDST,x
inx
bne @LM
inc @LM+2
inc @LM+5
dey
bne @LM
ldy #4
@ELM lda FONTSRC,x
; relocate font data to RAM bank 2
sta FONTDST,x
inx
bne @ELM
inc @ELM+2
inc @ELM+5
dey
bne @ELM
+READ_ROM_NO_WRITE
jsr BuildAcceleratorFunction
+READ_RAM2_WRITE_RAM2
+ST16 @accelSrc
dex
-
@accelSrc=*+1
lda $FDFD,x ; copy (de)acceleration functions to RAM bank 2
sta DisableAccelerator,x
dex
bpl -
+READ_ROM_WRITE_RAM2
jsr BuildVBLFunction
+DISABLE_ACCEL ; cycle counting in Mockingboard detection requires 1MHz
+LDADDR FoundMockingboardCallback
jsr GetMockingboardStuff
+READ_RAM2_WRITE_RAM2
stx MockingboardStuff ; save mockingboard slot and type in LC RAM
+READ_ROM_NO_WRITE
; if Mockingboard AND HAS_SPEECH then print CR & '...and it talks!'
txa
and #HAS_SPEECH
beq +
jsr LoadingCR
+LDADDR LoadingMockingboardSpeech
jsr LoadingPrint
+
+READ_RAM2_WRITE_RAM2
jsr EnableAccelerator
jmp OneTimeSetup
; ProRWTS2 has its own function to relocate itself
!source "src/prorwts2.a"
ProRWTSBuffer
; these routines will only be called once, from main memory, before relocating to language card
!source "src/hw.vidhd.a"
!source "src/hw.memcheck.a"
!source "src/hw.joystick.a"
!source "src/hw.mockingboard.a"
SetCursorPosition
stx HTAB
sty VTAB
jmp $FC22
LoadingPrint
+ST16 PTR
ldy #0
lda (PTR),y
sta @max
sty i
- inc i
ldy i
lda (PTR),y
ora #$80
+FORCE_UPPERCASE_IF_REQUIRED
jsr ROM_COUT
ldy i
@max=*+1
cpy #$FD ; SMC
bne -
rts
LoadingCR
lda #$8D
jmp ROM_COUT
FoundMockingboardCallback
; in: zp$81 contains slot number in form $Cx
jsr LoadingCR
+LDADDR LoadingMockingboard
jsr LoadingPrint
lda $81
and #$0F
ora #$B0
jmp ROM_COUT
TOTAL
!text "T O T A L"
REPLAY
!text "R E P L A Y"
!ifndef RELEASE {
LoadingVersion
!byte 6
!text "build "
LoadingBuild
!word BUILDNUMBER
} else {
LoadingVersion
!byte 10
!text "4.0-alpha3"
}
Loading64K
!byte 3
!text "64K"
Loading128K
!byte 4
!text "128K"
LoadingIIgs
!byte 4
!text "IIgs"
LoadingJoystick
!byte 8
!text "joystick"
LoadingVidHD
!byte 5
!text "VidHD"
LoadingMockingboard
!byte 21
!text "Mockingboard in slot "
LoadingMockingboardSpeech
!byte 16
!text "...and it talks!"
!ifndef RELEASE {
PrintAsDecimal
jsr $FF4A
lda $FDE2
cmp #$EA
bne +
dec @addr+1 ; fix for Laser
+
-- lda #$00
clv
ldx #$18
- cmp #$05
bcc +
sbc #$85
sec
+ rol $45
rol $46
rol $47
rol
dex
bne -
pha
lda #$FD
pha
@addr lda #$E1
pha
bvs --
rts
}
!source "src/hw.accel.a"
!source "src/hw.vbl.init.a"
!source "src/parse.games.a"
OneTimeSetup
lda zpMachineStatus
sta MachineStatus ; save machine status in LC RAM
and #IS_IIGS
beq @NotGSOS
!cpu 65816
lda $E100BD ; Make sure GS/OS was the boot OS
!cpu 6502
beq @NotGSOS
jsr PrepareGSOS
@NotGSOS
ldy #$0b
CopyDevs
lda $BF13,y
sta promote + $13,y
dey
bpl CopyDevs
lda $BF30
sta promote + ProDOS_unit - $bf00
; save unit in LC bank 2 while overriding !pseudopc
lda hddopendir+1 ; save current directory as 'root'
ldy hddopendir+3
jsr SwitchToBank1
+ST16 gRootDirectory
jsr LoadFile ; load preferences file into $8000
!word kRootDirectory
!word kGlobalPrefsFilename
- !word $8000
jsr ParseKeyValueList ; parse contents into OKVS data structure into LC RAM bank
!word gGlobalPrefsStore
!word -
!byte 16
+LD16 SRC ; (SRC) points to free space after the OKVS data structure we just created
+ST16 gGamesListStore ; save pointer to free space for next store
jsr LoadFile ; load games list file into $8200
!word kRootDirectory
!word @kGameListConfFile
- !word $8200
jsr ParseGamesList ; parse games list into OKVS data structure in LC RAM bank
!word gGamesListStore
!word -
!ifndef RELEASE {
+READ_ROM_NO_WRITE
lda #40
sta $21
lda #36
sta $24
dec $25
jsr $FC22
lda SRC+1
jsr $FDDA
lda SRC
jsr $FDDA
+READ_RAM1_WRITE_RAM1
}
+LDADDR gGamesListStore
jsr okvs_len
+LD16 WCOUNT
+ST16 GameCount
+ST16 SAVE
jsr pref_get ; see if cheats are enabled by default
!word kCheat
!word 0
+ST16 PTR ; (PTR) -> cheat pref value as length-prefixed string '1' or '0'
ldy #1
lda (PTR),y ; A = #$B1 or #$B0
and #1 ; A = #$01 or #$00
asl
asl
asl ; A = #$08 or #$00
ora MachineStatus
sta MachineStatus ; set bit 3 of MachineStatus
; calculate and update visible game count (3-digit decimal number as ASCII string)
dey ; Y = 0
@outer
lda #0
pha
@inner
lda SAVE
sec
sbc @kPowersOfTen,y
sta SAVE
lda SAVE+1
sbc #0
bcc @digitDone
sta SAVE+1
pla
adc #0
pha
jmp @inner
@digitDone
lda SAVE
adc @kPowersOfTen,y
sta SAVE
pla
ora #$30
sta VisibleGameCount,y
iny
cpy #$03
bcc @outer
bit CLEARKBD
jmp Reenter
@kGameListConfFile
!byte 10
!text "GAMES.CONF"
@kPowersOfTen
!byte 100
!byte 10
!byte 1
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