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4cade
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joystick detection works

This commit is contained in:
4am 2018-08-27 15:39:08 -04:00
parent 3232d592ff
commit b03ac885e4
4 changed files with 476 additions and 119 deletions
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147
src/4cade.a
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@ -2,134 +2,43 @@
!to "build/LAUNCHER.SYSTEM",plain
*=$2000
Has128KStatus =$FF ; [byte] set by Has128K
jmp Start
!source "src/constants.a"
!source "src/macros.a"
!source "src/memcheck.a"
!source "src/joystick.a"
!source "src/normfast.a"
!zone {
Start
jsr $FE89
jsr $FE93
jsr $FB2F
jsr $FC58
jsr Has128K
- ldx #0
beq -
;------------------------------------------------------------------------------
; Has128K
; Checks whether computer has auxiliary memory (i.e. 128K)
;
; in: none
; out: zero page $FF has
; $00 = not a //e
; $20 = //e but no 80-col card
; $40 = 80-col card but no aux mem
; $80 = aux mem detected (yay!)
; all other flags clobbered
; all registers clobbered
; zero page $1A-$1D clobbered
;
; original was AUX.MEM.CHECK from "Extra K"
; (c) 1986 Beagle Bros
; written by Alan Bird and Mark Simonsen, 1986-03-28
;------------------------------------------------------------------------------
Has128K
php
sei
lda $E000 ; store values from language card
sta $1A ; (used later to determine which
lda $D000 ; RAM bank is active and reset it)
sta $1B
lda $D400
sta $1C
lda $D800
sta $1D
lda ROMIN
lda ROMIN
lda MACHINEID
cmp #$06
bne @noiie
lda SLOT3STATUS
bmi @no80col
lda AUXMEMSTATUS
bmi @yesauxmem
lda AUXZPSTATUS
bmi @yesauxmem
ldy #$28
- ldx @checker,Y
lda $100,Y
sta @checker,Y
txa
sta $100,Y
bmi @found128K
ldy #9
- lda @s_needs128K,y
sta $400,y
dey
bpl -
jmp $100
@postcheck
ldy #$28
- lda @checker,Y
sta $100,Y
@hang bmi @hang
@s_needs128K
!text "NEEDS 128K"
@found128K
jsr DisableAccelerator
jsr HasJoystick
bcc @hang
ldy #10
- lda @s_nojoystick,y
sta $400,y
dey
bpl -
bcs @noauxmem
@yesauxmem
lda #$80
+HIDE_NEXT_2_BYTES
@noauxmem
lda #$40
+HIDE_NEXT_2_BYTES
@no80col
lda #$20
+HIDE_NEXT_2_BYTES
@noiie
lda #$00
sta Has128KStatus
lda $E000
cmp $1A
bne @tryRAMbank1
lda $D000
cmp $1B
bne @tryRAMbank1
lda $D400
cmp $1C
bne @tryRAMbank1
lda $D800
cmp $1D
beq @done
@tryRAMbank1
lda LCBANK1READ
lda $E000
cmp $1A
bne @tryRAMbank2
lda $D000
cmp $1B
bne @tryRAMbank2
lda $D400
cmp $1C
bne @tryRAMbank2
lda $D800
cmp $1D
beq @done
@tryRAMbank2
lda LCBANK2READ
@done
plp
lda Has128KStatus
rts
@checker
lda #$EE
sta WRITEAUXMEM
sta READAUXMEM
sta $800
lda $C00
cmp #$EE
bne @auxworks
asl $C00
lda $800
cmp $C00
bne @auxworks
sec
+HIDE_NEXT_BYTE
@auxworks
clc
sta WRITEMAINMEM
sta READMAINMEM
jmp @postcheck
bmi @hang
@s_nojoystick
!text "NO JOYSTICK"
}
; jsr init ; initialize ProRWTS2
; lda $C08B

40
src/joystick.a Normal file
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@ -0,0 +1,40 @@
;------------------------------------------------------------------------------
; HasJoystick
; Checks whether computer has joystick connected
;
; in: none
; out: C clear if joystick found
; C set if no joystick found
; other flags clobbered
; A,X clobbered
; Y preserved
;
; adapted from "Prince of Persia" by Jordan Mechner
; (c) 1989 Broderbund Software
; https://github.com/jmechner/Prince-of-Persia-Apple-II/blob/master/01%20POP%20Source/Source/GRAFIX.S#L1225
;------------------------------------------------------------------------------
HasJoystick
lda #0
sta joyX
sta joyY
lda $C070 ; reset analog input timers
@loop ldx #1
@1 lda $C064,x ; check timer input
bpl @beat
inc joyX,x ; still high, increment counter
@nextpdl dex
bpl @1
lda $C064
ora $C065
bpl @rts ; both inputs low, we're done
lda joyX
ora joyY
bpl @loop ; do it again
sec
+HIDE_NEXT_BYTE
@rts clc
rts
@beat nop
bpl @nextpdl ; kill time
joyX !byte 0
joyY !byte 0

121
src/memcheck.a Normal file
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Has128KStatus =$FF ; [byte] set by Has128K
;------------------------------------------------------------------------------
; Has128K
; Checks whether computer has auxiliary memory (i.e. 128K)
;
; in: none
; out: zero page $FF has
; $00 = not a //e
; $20 = //e but no 80-col card
; $40 = 80-col card but no aux mem
; $80 = aux mem detected (yay!)
; all other flags clobbered
; all registers clobbered
; zero page $1A-$1D clobbered
;
; original was AUX.MEM.CHECK from "Extra K"
; (c) 1986 Beagle Bros
; written by Alan Bird and Mark Simonsen, 1986-03-28
;------------------------------------------------------------------------------
Has128K
php
sei
lda $E000 ; store values from language card
sta $1A ; (used later to determine which
lda $D000 ; RAM bank is active and reset it)
sta $1B
lda $D400
sta $1C
lda $D800
sta $1D
lda ROMIN
lda ROMIN
lda MACHINEID
cmp #$06
bne @noiie
lda SLOT3STATUS
bmi @no80col
lda AUXMEMSTATUS
bmi @yesauxmem
lda AUXZPSTATUS
bmi @yesauxmem
ldy #$28
- ldx @checker,Y
lda $100,Y
sta @checker,Y
txa
sta $100,Y
dey
bpl -
jmp $100
@postcheck
ldy #$28
- lda @checker,Y
sta $100,Y
dey
bpl -
bcs @noauxmem
@yesauxmem
lda #$80
+HIDE_NEXT_2_BYTES
@noauxmem
lda #$40
+HIDE_NEXT_2_BYTES
@no80col
lda #$20
+HIDE_NEXT_2_BYTES
@noiie
lda #$00
sta Has128KStatus
lda $E000
cmp $1A
bne @tryRAMbank1
lda $D000
cmp $1B
bne @tryRAMbank1
lda $D400
cmp $1C
bne @tryRAMbank1
lda $D800
cmp $1D
beq @done
@tryRAMbank1
lda LCBANK1READ
lda $E000
cmp $1A
bne @tryRAMbank2
lda $D000
cmp $1B
bne @tryRAMbank2
lda $D400
cmp $1C
bne @tryRAMbank2
lda $D800
cmp $1D
beq @done
@tryRAMbank2
lda LCBANK2READ
@done
plp
lda Has128KStatus
rts
@checker
lda #$EE
sta WRITEAUXMEM
sta READAUXMEM
sta $800
lda $C00
cmp #$EE
bne @auxworks
asl $C00
lda $800
cmp $C00
bne @auxworks
sec
+HIDE_NEXT_BYTE
@auxworks
clc
sta WRITEMAINMEM
sta READMAINMEM
jmp @postcheck

287
src/normfast.a Normal file
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@ -0,0 +1,287 @@
;;; NORMFAST Disable/enable Apple II compatible accelerator
;
; Release 6 2017-10-05 Fix Mac IIe card check
;
; Release 5 2017-09-27 Add Macintosh IIe Card. Addon
; accelerators are now set blindly, so will access
; annunciators/IIc locations and may trigger the
; paddle timer.
; No plans for the Saturn Systems Accelerator which would
; require a slot search.
;
; Release 4 2017-09-06 Add Laser 128EX, TransWarp I, UW
;
; Release 3 2017-08-29 Change FASTChip partially back to
; release 1, which seems to work the way release 2 was
; intended?!
;
; Release 2 2017-08-27 change enable entry point, add Zip
; Chip, change setting FASTChip speed to disable/enable
;
; Release 1 2017-08-25 IIGS, //c+ and FASTChip
;
; WARNING: The memory location to set the accelerator
; speed may overlap existing locations such as:
; annuciators or Apple //c specific hardware
; paddle trigger
;
; Known to work: IIGS, //c+
; Theoretically: FASTChip, Laser 128EX, Mac IIe Card,
; TransWarp I, trademarked German product, Zip Chip
;
; BRUN NORMFAST or CALL 768 to disable the accelerator.
; CALL 771 to enable the accelerator.
; Enabling an older accelerator may set maximum speed.
; Accelerators such as the FASTChip or Zip Chip can run
; slower than 1Mhz when enabled.
;
; NORMFAST is position independent and can be loaded most
; anywhere in the first 48K of memory.
; The ROMs must be enabled to identify the model of the
; computer.
;
; This was originally for the //c+ which is normally
; difficult to set to 1Mhz speed.
; The other expected use is to set the speed in a program.
;
; Written for Andrew Jacobs' Java based dev65 assembler at
; http://sourceforge.net/projects/dev65 but has portability
; in mind.
; addresses are lowercase, constant values are in CAPS
RELEASE = 6 ; our version
romid = $FBB3
; $38=][, $EA=][+, $06=//e compatible
ROMID_IIECOMPAT = 6
romid_ec = $FBC0
; $EA=//e original, $E0=//e enhanced, $E1=//e EDM, $00=//c
; Laser 128s are $E0
romid_c = $FBBF
; $FF=original, $00=Unidisk 3.5 ... $05=//c+
ROMID_CPLUS = 5
romid_maciie_2 = $FBDD ; 2
; IIGS
idroutine = $FE1F ; SEC, JSR $FE1F, BCS notgs
gsspeed = $C036
GS_FAST = $80 ; mask
; //c+ Cache Glue Gate Array (accelerator)
cgga = $C7C7 ; entry point
CGGA_ENABLE = 1 ; fast
CGGA_DISABLE = 2 ; normal
CGGA_LOCK = 3
CGGA_UNLOCK = 4 ; required to make a change
; Macintosh IIe Card
maciie = $C02B
MACIIE_FAST = 4 ; mask
l128irqpage = $C4
; From the 4.2, 4.5 and EX2 ROM dumps at the Apple II
; Documentation Project, the Laser 128 IRQ handlers are
; in the $C4 page.
; A comp.sys.apple2 post says the 6.0 ROM for the 128 and
; 128EX are identical, so there may not be an easy way to
; tell a plain 128 from an (accelerated) 128EX.
irq = $FFFE ; 6502 IRQ vector
; may overlap with paddle trigger
ex_cfg = $C074 ; bits 7 & 6 for speed
EX_NOTSPEED = $3F
EX_1MHZMASK = $0
EX_2MHZMASK = $80 ; 2.3Mhz
EX_3MHZMASK = $C0 ; 3.6Mhz
; FASTChip
fc_lock = $C06A
FC_UNLOCK = $6A ; write 4 times
FC_LOCK = $A6
fc_enable = $C06B
fc_speed = $C06D
FC_1MHZ = 9
FC_ON = 40 ; doco says 16.6Mhz
; TransWarp I
; may overlap with paddle trigger
tw1_speed = $C074
TW1_1MHZ = 1
TW1_MAX = 0
; Trademarked German accelerator
; overlaps annunciator 2 & //c mouse interrupts
uw_fast = $C05C
uw_1mhz = $C05D
; Zip Chip
; overlaps annunciator 1 & //c vertical blank
zc_lock = $C05A
ZC_UNLOCK = $5A ; write 4 times
ZC_LOCK = $A5
zc_enable = $C05B
iobase = $C000 ; easily confused with kbd
DisableAccelerator
; disable accelerator
lda #1
!byte $2C ; BIT <ABSOLUTE>, hide next lda #
EnableAccelerator
; enable accelerator
lda #0
ldx #RELEASE ; our release number
;; first check built-in accelerators
ldx romid
cpx #ROMID_IIECOMPAT
bne addon ; not a //e
ldx romid_ec
beq iic ; //c family
; not worth the bytes for enhanced //e check
ldx irq+1
cpx #l128irqpage
bne gscheck
; a Laser 128, hopefully harmless on a non EX
ldy #EX_3MHZMASK ; phew, all needed bits set
ldx #<(ex_cfg)
;; setspeed - set 1Mhz with AND and fast with OR
;
; A = lsb set for normal speed
; X = low byte address of speed location
; Y = OR mask for fast
setspeed
lsr
tya
bcs setnorm
ora iobase,x
bne setsta ; always
setnorm
eor #$FF
and iobase,x
setsta
sta iobase,x
rts
gscheck
pha
sec
jsr idroutine
pla
bcs maccheck ; not a gs
; set IIGS speed
ldy #GS_FAST
ldx #<(gsspeed)
bne setspeed ; always
maccheck
ldx romid_maciie_2
cpx #2
bne addon ; no built-in accelerator
; the IIe Card in a Mac
ldy #MACIIE_FAST
ldx #<(maciie)
bne setspeed ; always
iic
ldx romid_c
cpx #ROMID_CPLUS
bne addon ; not a //c+, eventually hit Zip
; Set //c+ speed. Uses the horrible firmware in case other
; code works "by the book", that is can check and set
; whether the accelerator is enabled.
; The //c+ is otherwise Zip compatible.
!cpu 65C02 ; only used for //c+
inc ; 65C02 $1A
!cpu 6502
; cgga calls save X and Y regs but sets $0 to 0
; (this will get a laugh from C programmers)
ldx $0
php
sei ; timing sensitive
pha ; action after CGGA_UNLOCK
lda #CGGA_UNLOCK ; unlock to change
pha
jsr cgga
jsr cgga ; disable/enable
lda #CGGA_LOCK ; should lock after a change
pha
jsr cgga
plp ; restore interrupt state
stx $0
rts
;; At this point, the computer does not have a built-in
;; accelerator
;
; Previous versions had tested fc_enable, which was not
; enough. Running low on space so just set blindly.
addon
; TransWarp I
sta tw1_speed
; Zip Chip
tay
eor #1
tax
lda #ZC_UNLOCK
php
sei ; timing sensitive
sta zc_lock
sta zc_lock
sta zc_lock
sta zc_lock
lsr ; not ZC_LOCK or ZC_UNLOCK
sta zc_lock,x ; disable/enable
lda #ZC_LOCK
sta zc_lock
;; current products are subject to change so do
;; these last
; trademarked accelerator from Germany
sta uw_fast,y ; value does not matter
; FASTChip
ldx #FC_1MHZ
tya
bne fcset
ldx #FC_ON ; enable set speed?
fcset
lda #FC_UNLOCK
sta fc_lock
sta fc_lock
sta fc_lock
sta fc_lock
sta fc_enable
stx fc_speed
lda #FC_LOCK
sta fc_lock
plp ; restore interrupt state
rts