antoine-source/dlld/source/dlld4.s

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2024-04-18 08:19:10 +00:00
*
* DLLD
* Let's play Dragon's Lair :-)
*
* (c) 2024, Brutal Deluxe Software
*
mx %11
org $2000
lst off
use 4/Int.Macs
use 4/Misc.Macs
use 4/Util.Macs
*-----------------------------------
* MACROS
*-----------------------------------
_sendSTRING mac
ldx #>]1
ldy #<]1
jsr sendString
eom
*-----------------------------------
* EQUATES
*-----------------------------------
SLOT = 2
N0 = SLOT*16
CN = SLOT!$C0
dpFROM = $fc
dpTO = dpFROM+2
chrRETURN = $0d
*----------
CH = $24
KBD = $c000
CLR80VID = $c00c
KBDSTROBE = $c010
INIT = $FB2F
TABV = $FB5B
HOME = $FC58
PRBYTE = $FDDA
COUT = $FDED
SETNORM = $FE84
SETKBD = $FE89
*-----------------------------------
* CODE
*-----------------------------------
bra jumpME
theFRAME ds 2
jumpME sta CLR80VID
jsr INIT ; text screen
jsr SETNORM ; set normal text mode
jsr SETKBD ; reset input to keyboard
jsr HOME ; home cursor and clear to end of page
clc
xce
rep #$30
lda #323
sta theFRAME
sec
xce
sep #$30
jsr initSERIAL ; set the serial addresses
jsr initPORT ; init the serial port for LD support
ldx #>strDS ; on veut la frame number
ldy #<strDS
jsr sendLDCommand
ldx #>strSA ; start the player
ldy #<strSA
jsr sendLDCommand
* jsr setINT
*----------
]lp lda KBD ; wait for a key
bpl ]lp
bit KBDSTROBE
ldx #>strSE ; Move to frame
ldy #<strSE
jsr sendLDCommand
ldx #>strPL ; Play to frame
ldy #<strPL
jsr sendLDCommand
* jsr startINT
*----------
]lp lda #0
sta CH
jsr TABV
ldx #>strQF ; Frame number request
ldy #<strQF
jsr sendLDCommand
lda responseBUF
ora #$80
jsr COUT
lda responseBUF+1
ora #$80
jsr COUT
lda responseBUF+2
ora #$80
jsr COUT
lda responseBUF+3
ora #$80
jsr COUT
lda responseBUF+4
ora #$80
jsr COUT
* lda theFRAME+1
* jsr PRBYTE
* lda theFRAME
* jsr PRBYTE
lda KBD ; wait for a key
bpl ]lp
bit KBDSTROBE
* jsr stopINT
* jsr unsetINT
*----------
ldx #>strRJ ; It's the end!
ldy #<strRJ
jsr sendLDCommand
rts
*--- Data
strDS asc '1DS'00 ; display frame number
strCO asc 'CO'00 ; close the door
strSA asc 'SA'00 ; start player
strRJ asc 'RJ'00 ; stop the player
strQF asc '?F'00 ; which frame are we on?
strSE asc 'FR00323SE'00 ; set frame...
strPL asc 'FR01359PL'00 ; play to frame...
*-----------------------------------
* INTERRUPT
*-----------------------------------
setINT clc
xce
rep #$30
php
sei
PushLong #theINT
_SetHeartBeat
plp
sec
xce
sep #$30
rts
*----------
unsetINT clc
xce
rep #$30
php
sei
PushLong #theINT
_DelHeartBeat
plp
sec
xce
sep #$30
rts
*----------
theINT ds 4
dw 1
dw $a55A
rep #$30
lda #1
stal theINT+4
ldal theFRAME
inc
stal theFRAME
sep #$30
clc
rtl
*----------
startINT clc
xce
rep #$30
PushWord #2
_IntSource
sec
xce
sep #$30
rts
*----------
stopINT clc
xce
rep #$30
PushWord #3
_IntSource
sec
xce
sep #$30
rts
*-----------------------------------
* SERIAL PORT (MODEM)
*-----------------------------------
*---------- Set all addressses
initSERIAL
lda $c20d
sta doinit+1
lda $c20e
sta doread+1
lda $c20f
sta dowrite+1
lda $c210
sta dostatus+1
rts
doinit jmp $c20d
doread jmp $c20e
dowrite jmp $c20f
dostatus jmp $c210
*---------- Init modem port for LD support
initPORT ldx #CN
ldy #N0
jsr doinit
_sendSTRING #strED ; Don't echo output
_sendSTRING #strBE ; Input buffering: on
_sendSTRING #str12B ; Baud rate: 4800 BPS
_sendSTRING #str0D ; Data/Stop bits: 8/1
_sendSTRING #str0P ; Parity: none
_sendSTRING #str0N ; Line length: 0
_sendSTRING #strAD ; Do not implement basic tabs
_sendSTRING #strCD ; Disable line formatting
_sendSTRING #strXD ; Ignore XOFF
_sendSTRING #strFD ; Disable keyboard input
_sendSTRING #strLD ; Do not add line feeds after CR
_sendSTRING #strME ; Mask line feed in
_sendSTRING #strZ ; Suppress control characters
jsr checkInputReady
rts
*---------- Check the input is ready
checkInputReady
ldx #8
ldy #0
]lp phx
phy
ldx #CN
ldy #N0
lda #1
jsr dostatus
bcs checkIR1
ply
plx
dey
bne ]lp
dex
bne ]lp
sec
rts
checkIR1 ply
plx
clc
rts
*---------- Check the output is ready
checkOutputReady
ldx #8
ldy #0
]lp phx
phy
ldx #CN
ldy #N0
lda #0
jsr dostatus
bcs checkOR1
ply
plx
dey
bne ]lp
dex
bne ]lp
sec
rts
checkOR1 ply
plx
clc
rts
*---------- Send a LD command
sendLDCommand
jsr sendString
bcs sendLDError
jsr receiveString
sendLDError rts
*---------- Send a string
sendString
sty dpFROM
stx dpFROM+1
]lp lda (dpFROM)
beq sendCRS1 ; end of string?
jsr sendCharacter
bcs sendError ; error!
inc dpFROM
bne ]lp
inc dpFROM+1
bne ]lp
sendCRS1 lda #chrRETURN ; yes, add a final CR
jsr sendCharacter
sendError rts
*---------- Send serial character
sendCharacter
pha
]lp jsr checkOutputReady
bcc sensSC1
pla
sec
rts
sensSC1 pla
ldx #CN
ldy #N0
jsr dowrite
clc
rts
*---------- Receive string
receiveString
ldx #>responseBUF
ldy #<responseBUF
sty dpTO
stx dpTO+1
ldy #0
receiveSTR1 phy
]lp jsr checkInputReady
bcs receiveSTR9
ldx #CN
ldy #N0
jsr doread
cpx #0
bne receiveSTR9
ply
sta (dpTO),y
cmp #chrRETURN
beq receiveSTR8
iny
bne receiveSTR1
receiveSTR8 clc
rts
receiveSTR9 ply
sec
rts
*-----------------------------------
* DATA
*-----------------------------------
*---------- Serial data
strED asc 01'ED'00 ; *Don't echo output
strBE asc 01'BE'00 ; *Input buffering: on
str12B asc 01'12B'00 ; *Baud rate: 4800 BPS
str0D asc 01'0D'00 ; *Data/Stop bits: 8/1
str0P asc 01'0P'00 ; *Parity: none
str0N asc 01'0N'00 ; Line length: 0
strAD asc 01'AD'00 ; *Do not implement basic tabs
strCD asc 01'CD'00 ; *Disable line formatting
strXD asc 01'XD'00 ; *Ignore XOFF
strFD asc 01'FD'00 ; *Disable keyboard input
strLD asc 01'LD'00 ; Do not add line feeds after CR
strME asc 01'ME'00 ; Mask line feed in
strZ asc 01'Z'00 ; *Suppress control characters
*---------- Laserdisc
ds \
responseBUF ds 256 ; LD player response
*-----------------------------------
* END OF CODE
*-----------------------------------