A2osX/A2osX.S.QC.txt
2020-09-25 14:05:23 +02:00

220 lines
3.8 KiB
Plaintext
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

NEW
AUTO 3,1
.LIST OFF
*--------------------------------------
* ****** START OF MLI QUIT CODE ******
* Load Address :$1000-$12FF
*--------------------------------------
.PH $1000
*--------------------------------------
* Kernel Stage 1
*--------------------------------------
A2osX.QC.Start .EQ *
A2osX.QC cld
jmp A2osX.QC.Start1
A2osX.QC.BOOT .BS 32
A2osX.QC.ROOT .BS 32
A2osX.QC.Start1 sei
ldx #$FF
txs
cli
bit RROMBNK1
>LDYAI A2osX.QC
>STYA POWERUP
jsr SETPWRC
lda #$01
sta MEMTABL+$17 protect ProDOS MLI Page
ldx #$16
.1 stz MEMTABL,x Reset ProDOS memory bitmap
dex
bne .1
lda #$CF protect zero page, stack and page 1
sta MEMTABL
lda #$8C Reset 80 col screen ($0C=FF=HOME)
jsr $C300
lda $280
beq A2osX.QC.Start2
jsr A2osX.QC.Load
bcs A2osX.QC.Start2
jmp $2000
A2osX.QC.Start2 sec
>LDYAI MSG.INIT1
jsr A2osX.QC.PrintYA
.3 jsr MLI
.DA #MLISETPREFIX
.DA MLISETPREFIX03
bcc .4
>LDYAI MSG.SETPREFIXKO
clc
jsr A2osX.QC.PrintYA
>LDYAI A2osX.QC.BOOT
sec
jsr A2osX.QC.PrintYA
>DEBUG
bra .3
.4 >LDYAI MSG.SETPREFIXOK
clc
jsr A2osX.QC.PrintYA
>LDYAI A2osX.QC.BOOT
sec
jsr A2osX.QC.PrintYA
ldx A2osX.QC.BOOT
stx $280 For appending SYS/KERNEL
stz $2C0,x
.5 lda A2osX.QC.BOOT,x
sta $280,x
sta $2C0-1,x BOOT sz for KERNEL
dex
bpl .5
ldx A2osX.QC.ROOT
stz $2E0,x
.6 lda A2osX.QC.ROOT,x
sta $2E0-1,x ROOT sz for KERNEL
dex
bpl .6
ldx $280
ldy #0
.7 inx
iny
lda SYSKERNEL,y
sta $280,x
cpy SYSKERNEL
bne .7
stx $280
jsr A2osX.QC.Load
bcs *
.8 >LDYAI MSG.INIT1OK
sec
jsr A2osX.QC.PrintYA
A2osX.QC.JMP >DEBUGOA
jmp $2000
*--------------------------------------
A2osX.QC.Load >LDYAI MSG.LOAD
clc
jsr A2osX.QC.PrintYA
>LDYAI $280
clc
jsr A2osX.QC.PrintYA
jsr MLI
.DA #MLIOPEN
.DA MLIOPEN03
bcs .9
lda MLIOPEN03+5
sta MLIREAD03+1
sta MLICLOSE03+1
jsr MLI
.DA #MLIREAD
.DA MLIREAD03
php
pha
jsr MLI
.DA #MLICLOSE
.DA MLICLOSE03
pla
plp
bcc .8
.9 pha
>LDYAI MSG.LOAD.KO
clc
jsr A2osX.QC.PrintYA
pla
jsr PRBYTE
jsr CROUT
sec
rts
.8 >LDYAI MSG.LOAD.OK
sec
jsr A2osX.QC.PrintYA
clc
rts
*--------------------------------------
A2osX.QC.PrintYA
php
>STYA TmpPtr1
lda (TmpPtr1)
tax
beq .9
ldy #1
.1 lda (TmpPtr1),y
ora #$80
jsr COUT
iny
dex
bne .1
.9 plp
bcc .99
jsr CROUT
.99 rts
*--------------------------------------
MLISETPREFIX03 .DA #1
.DA A2osX.QC.BOOT
*--------------------------------------
MLIOPEN03 .DA #3
.DA $280
.DA $C00
.BS 1
*--------------------------------------
MLIREAD03 .DA #4
.BS 1
.DA $2000
.DA $9F00 Max .SYSTEM file len
.BS 2
*--------------------------------------
MLICLOSE03 .DA #1
.BS 1
*--------------------------------------
SYSKERNEL >PSTR "sys/kernel"
*--------------------------------------
MSG.INIT1 >PSTR "A2osX[Stage1]:Init"
MSG.SETPREFIXOK >PSTR "Prefix Set: "
MSG.SETPREFIXKO >PSTR "Insert Vol:"
MSG.LOAD >PSTR "Loading : "
MSG.LOAD.KO >PSTR " Error $"
MSG.LOAD.OK >PSTR " OK."
MSG.INIT1OK >PSTR "A2osX[Stage1]:Complete."
*--------------------------------------
.LIST ON
QC.FREE .EQ $1300-*
.LIST OFF
.EP
*--------------------------------------
MAN
SAVE USR/SRC/A2OSX.S.QC
LOAD USR/SRC/A2OSX.S
ASM