mirror of https://github.com/mgcaret/of816.git
204 lines
5.8 KiB
ArmAsm
204 lines
5.8 KiB
ArmAsm
.p816
|
|
.a8
|
|
.i8
|
|
.include "platform-config.inc"
|
|
.include "macros.inc"
|
|
.include "equates.inc"
|
|
.include "platform-include.inc"
|
|
.import _Forth_initialize
|
|
.import _Forth_ui
|
|
.import _system_interface
|
|
|
|
.pushseg
|
|
.segment "FStartup"
|
|
; In the IIgs we enter here at $2000 in emulation mode from ProDOS 8
|
|
bra startup
|
|
MasterId: .word 0
|
|
;UserId: .word 0 ; Now in page 3
|
|
BankLoad: .word 0
|
|
Bnk0Hnd: .dword 0
|
|
Bnk1Hnd: .dword 0
|
|
DataHnd: .dword 0
|
|
|
|
.proc startup
|
|
sec
|
|
jsr IDRoutine
|
|
bcc :+
|
|
jmp quit
|
|
: lda #$C3
|
|
sta CON_RD+1
|
|
sta CON_WR+1
|
|
sta CON_ST+1
|
|
sta ECALL+1
|
|
lda $C30D
|
|
sta ECALL
|
|
lda $C30E
|
|
sta CON_RD
|
|
lda $C30F
|
|
sta CON_WR
|
|
lda $C310
|
|
sta CON_ST
|
|
ldx #$00
|
|
jsr (ECALL,x)
|
|
lda #'0'
|
|
sta $800
|
|
clc
|
|
xce
|
|
rep #SHORT_A|SHORT_I
|
|
.a16
|
|
.i16
|
|
phk
|
|
plb
|
|
jsr _prep_tools ; get the GS toolbox ready to use
|
|
pea $0000 ; now let's ask for memory for the data space
|
|
pea $0000 ; result space
|
|
lda #.hiword(data_space_size)
|
|
pha
|
|
lda #.loword(data_space_size)
|
|
pha
|
|
lda f:UserId
|
|
pha
|
|
lda #%1100000000001100 ; locked, unpurgeable, page-align, may cross banks
|
|
pha
|
|
pea $0000
|
|
pea $0000
|
|
_NewHandle
|
|
ply ; low byte
|
|
plx ; high byte
|
|
_Err
|
|
sty DataHnd ; save the handle for later deref
|
|
stx DataHnd+2
|
|
; now we can start the Forth initialization
|
|
; we need to set direct page and then push the remaining initialization
|
|
; parameters onto the (system) return stack.
|
|
lda #$0800 ; direct page for Forth
|
|
tcd
|
|
sty ZR ; put DataHnd in ZR for deref
|
|
stx ZR+2
|
|
lda #$0000 ; top of data space, will store later
|
|
pha
|
|
pha
|
|
ldy #$0000
|
|
lda [ZR],y ; dereferenced low byte
|
|
tax
|
|
clc
|
|
adc #.loword(data_space_size)
|
|
sta 1,s ; update top of data space low word
|
|
iny
|
|
iny
|
|
lda [ZR],y ; dereferenced high byte
|
|
pha
|
|
adc #.hiword(data_space_size)
|
|
sta 5,s ; update top of data space high word
|
|
phx
|
|
lda #$0300 ; first usable stack cell (relative to direct page)
|
|
pha ; $800 + $0300 = $0B00
|
|
lda #$0100 ; last usable stack cell+1 (relative to direct page)
|
|
pha ; $800 + $0100 = $0900
|
|
lda #$0DFF ; return stack first usable byte
|
|
pha
|
|
lda #.hiword(_system_interface)
|
|
pha
|
|
lda #.loword(_system_interface)
|
|
pha
|
|
lda #'1'
|
|
sta $800
|
|
jsl _Forth_initialize
|
|
lda #'2'
|
|
sta $800
|
|
jsl _Forth_ui
|
|
lda #'3'
|
|
sta $800
|
|
; When Forth returns, BYE was executed, clean up and quit
|
|
lda #$0000 ; restore direct page to page 0
|
|
tcd
|
|
.if 0
|
|
lda f:UserId
|
|
pha
|
|
_DisposeAll
|
|
.else
|
|
ldx DataHnd+2 ; dispose of our data space
|
|
ldy DataHnd
|
|
phx
|
|
phy
|
|
_DisposeHandle
|
|
.endif
|
|
_Err
|
|
lda f:UserId
|
|
pha
|
|
_MMShutDown ; Shut down memory manager
|
|
quit: sec ; exit back to P8 or GS/OS
|
|
xce
|
|
.a8
|
|
.i8
|
|
jsr MLI
|
|
.byte $65
|
|
.addr p_QUIT
|
|
brk
|
|
.byte $00
|
|
p_QUIT: .byte 4
|
|
.byte 0
|
|
.addr 0
|
|
.byte 0
|
|
.addr 0
|
|
.endproc
|
|
.a16
|
|
.i16
|
|
|
|
|
|
; Thanks to Dagen Brock for this, adapted from:
|
|
; https://github.com/digarok/gslib/blob/master/source/p8_tools.s
|
|
.proc _prep_tools
|
|
stz MasterId ; Clear Master ID
|
|
_TLStartUp ; start Tool Locator
|
|
pha ; result space
|
|
_MMStartUp ; start Memory Manager
|
|
pla ; User ID
|
|
bcs :+
|
|
brl MM_OK
|
|
: _MTStartUp ; start Misc Tools
|
|
pha ; result space
|
|
pea $1000 ; b15-12 $1 = Application
|
|
_GetNewId ; get a new user ID
|
|
pla
|
|
sta MasterId ; save it
|
|
pha ; result space
|
|
pha
|
|
pea $0000 ; block size ($0000B800)
|
|
pea $B800
|
|
lda MasterId
|
|
pha ; User ID
|
|
pea $C002 ; attributes (locked, fixed, unmovable)
|
|
pea $0000 ; location ($00000800)
|
|
pea $0800
|
|
_NewHandle
|
|
ply ; get handle for bank 0
|
|
plx
|
|
_Err
|
|
sty Bnk0Hnd
|
|
stx Bnk0Hnd+2
|
|
pha ; now do bank 1
|
|
pha
|
|
pea $0000
|
|
pea $B800
|
|
lda MasterId
|
|
pha
|
|
pea $C002
|
|
pea $0001
|
|
pea $0800
|
|
_NewHandle
|
|
ply ; get handle for bank 1
|
|
plx
|
|
_Err
|
|
sty Bnk1Hnd
|
|
stx Bnk1Hnd+2
|
|
pha ; result space
|
|
_MMStartUp
|
|
pla
|
|
_Err
|
|
MM_OK: sta f:UserId
|
|
rts
|
|
.endproc
|
|
|
|
.popseg
|