A2osX/A2osX.S.txt

NEW
PREFIX /A2OSX.BUILD
AUTO 4,1
				.LIST OFF
				.OP	65C02
				.OR	$2000
				.TF A2OSX.SYSTEM,TSYS
*--------------------------------------
				.INB INC/MACROS.I
				.INB INC/A2OSX.I
				.INB INC/IO.I
				.INB INC/MONITOR.I
				.INB INC/PRODOS.I
				.INB INC/MLI.ERR.I
*--------------------------------------
TmpPtr1			.EQ	$0					main & aux ZP
TmpPtr2			.EQ	$2					main & aux ZP
*--------------------------------------
A2osX.KMLOAD	.EQ $2000
A2osX.KMMAXLEN	.EQ $4000
A2osX.OpenBuff1	.EQ $6000				1024 Buffer for MLIOPEN01
A2osX.OpenBuff2	.EQ $6400				1024 Buffer for MLIOPEN02
A2osX.ReadBuff	.EQ	$6800				512 Buffer for MLIREAD01
Boot.Prefix		.EQ $6A00				MLI.MAXPATH
KM.Filename		.EQ $6A80				MLI.MAXPATH
*--------------------------------------
* Kernel Stage 0
*--------------------------------------
				.PH	$1000
				
A2osX.Init0		>LDYAI $2000
				>STYA TmpPtr1
				>LDYAI $1000
				>STYA TmpPtr2

				ldx #$10				reloc $2000-$2FFF to $1000-$1FFF
				ldy #0
				
.1				lda (TmpPtr1),y
				sta (TmpPtr2),y
				iny
				bne .1
				
				inc TmpPtr1+1
				inc TmpPtr2+1
				dex
				bne .1

				jmp A2osX.Init1
*--------------------------------------
A2osX.Init1		ldx	#$FF				init 6502 stack to highest
				txs
				
				bit RROMBNK1
				jsr HOME
				>LDYAI MSG.INIT0
				jsr PrintFYA

				>LDYAI MSG.SYSMEM
				jsr PrintFYA

				lda MACHID
				and #MACHID.M
				cmp #MACHID.M.128
				beq .1

				>LDYAI MSG.SYSMEM.KO
				jsr PrintFYA
				bra *

.1				lda #$8C				Reset 80 col screen ($0C:HOME)
				jsr $C300

				>LDYAI MSG.INIT0
				jsr PrintFYA

				>LDYAI MSG.SYSMEM
				jsr PrintFYA

				>LDYAI MSG.SYSMEM.OK
				jsr PrintFYA
				
				>LDYAI MSG.CPU
				jsr PrintFYA

				sed						Test 6502 BCD bug
				lda #$99
				clc
				adc #$01
				cld
				bpl .2					if minus, BUG!, we have 6502
				
				>LDYAI MSG.CPU.KO
				jsr PrintFYA
				bra *

.2				>LDYAI MSG.CPU.OK
				jsr PrintFYA
*--------------------------------------
A2osX.CloseAll	stz LEVEL				Back To FILE LEVEL 0

				jsr MLI					Make sure all files are closed
				.DA #MLICLOSE
				.DA MLICLOSE01
				bcs *
*--------------------------------------
A2osX.Prefix	>LDYAI MSG.BOOTPREFIX
				jsr PrintFYA
				jsr MLI
				.DA #MLIGETPREFIX
				.DA MLIGETPREFIX01
				bcs *
				ldx Boot.Prefix
				stx A2osX.QC.B.Start+4
				ldy #1
.1				lda Boot.Prefix,y
				sta A2osX.QC.B.Start+4,y
				ora #$80
				jsr COUT
				iny
				dex
				bne .1
				jsr CROUT
*--------------------------------------
A2osX.RamDrv	>LDYAI MSG.RAMDRV
				jsr PrintFYA

				jsr DisableRamDRV
				bcc .2

				tax
				bne .1
				>LDYAI MSG.RAMDRV.KO0
				jsr PrintFYA
				bra A2osX.SetupQC
				
.1				>LDYAI MSG.RAMDRV.KO1
				jsr PrintFYA
				bra A2osX.SetupQC
				
.2				>LDYAI MSG.RAMDRV.OK
				jsr PrintFYA
*--------------------------------------
A2osX.SetupQC	lda RRAMWRAMBNK2
				lda RRAMWRAMBNK2

				ldx #0
				
.1				lda A2osX.QC.B.Start,x
				sta $D100,x
				lda A2osX.QC.B.Start+$100,x
				sta $D200,x
				lda A2osX.QC.B.Start+$200,x
				sta $D300,x
				inx
				bne .1

				lda RROMBNK1
*--------------------------------------
A2osX.EnumKM	>LDYAI MSG.KMENUM
				jsr PrintFYA
				jsr EnumKM
*--------------------------------------
A2osX.MLIQuit	>LDYAI MSG.INIT0OK
				jsr PrintFYA

				>DEBUGOA
				jsr MLI
				.DA #MLIQUIT
				.DA MLIQUIT01
				bra *
*--------------------------------------
DisableRamDRV	php
				sei
				lda DEVPTRS3D2
				cmp DEVPTRS				S0D1=NOVEV				
				bne .1
				lda DEVPTRS3D2+1
				cmp DEVPTRS+1			S0D1=NODEV
				beq .9					S3D2=NODEV, nothing to do
				
.1				ldx DEVCNT

.2				lda DEVLST,x			LOOKING FOR $BF, $BB, $B7, $B3
				and #$F3
				cmp #$B3
				beq .3
				
				dex
				bpl .2
				
				plp
				lda #1					No device found, exit with error
				sec
				rts
				
.3				cpx DEVCNT
				beq .5

.4				lda DEVLST+1,x
				sta DEVLST,x
				inx
				cpx DEVCNT
				bne .4
				
.5				ldx DEVCNT
				stz DEVLST,x
				dec DEVCNT
				
				lda DEVPTRS
				sta DEVPTRS3D2
				lda DEVPTRS+1
				sta DEVPTRS3D2+1
				plp
				
				jsr MLI
				.DA #MLIONLINE
				.DA MLIONLINE01
				clc						Success!!
				rts
				
.9				plp
				lda #0					Not detected
				sec
				rts
*--------------------------------------
EnumKM.EPB		.EQ $0D
EnumKM.EL		.EQ $27
*--------------------------------------
EnumKM			ldx #0
				ldy Boot.Prefix
.1				inx
				lda SYS,x
				sta Boot.Prefix+1,y
				iny
				cpx SYS
				bne .1
				
				sty Boot.Prefix
				
				jsr MLI
				.DA #MLIOPEN
				.DA MLIOPEN01
				bcs .99
				
				lda MLIOPEN01+5
				sta MLIREAD01+1
				sta MLICLOSE01+1
				
.2				jsr MLI
				.DA #MLIREAD
				.DA MLIREAD01
				bcs .98
				
				lda #EnumKM.EPB
				sta EnumKM.EC
				>LDYAI A2osX.ReadBuff+4
				>STYA EnumKM.BPTR
				
.3				>LDYA EnumKM.BPTR
				>STYA TmpPtr1
				lda (TmpPtr1)
				and #$F0				Empty ?
				beq .5					yes, skip
				and #$C0				anything out of type 1,2 or 3 ?
				bne .5					yes, skip
				lda (TmpPtr1)
				and #$0F
				cmp KM.PREFIX			at least enough chars for KM.*?
				bcc .5					no, skip
				ldy #$10				file type
				lda (TmpPtr1),y
				cmp #$06				'BIN'?
				bne .5					skip
				ldy KM.PREFIX
.4				lda (TmpPtr1),y
				cmp KM.PREFIX,y
				bne .5
				dey
				bne .4
				
				jsr LoadKM
				
.5				lda EnumKM.BPTR
				clc	
				adc #EnumKM.EL
				sta EnumKM.BPTR
				bcc .6
				inc EnumKM.BPTR+1

.6				dec EnumKM.EC
				bne .3
				bra .2
				
.8				jsr MLI
				.DA #MLICLOSE
				.DA MLICLOSE01
				rts
				
.98				cmp #MLI.E.EOF
				beq .8
				pha
				jsr .8
				pla
.99				sec
				rts
*--------------------------------------
EnumKM.EC		.BS 1
EnumKM.BPTR		.BS 2
*--------------------------------------
LoadKM			ldx Boot.Prefix
.1				lda Boot.Prefix,x
				sta KM.Filename,x
				dex
				bne .1
				
				ldx Boot.Prefix
				lda (TmpPtr1)
				and #$0F
				tay
				clc
				adc Boot.Prefix
				sta KM.Filename
				tax
				
.2				lda (TmpPtr1),y
				sta KM.Filename,x
				dex
				dey
				bne .2
				
				lda #KM.Filename
				pha
				lda /KM.Filename
				pha
				
				>LDYAI MSG.KMLOAD
				jsr PrintFYA

				jsr MLI
				.DA #MLIOPEN
				.DA MLIOPEN02
				bcs .99

				lda MLIOPEN02+5
				sta MLIREAD02+1
				sta MLICLOSE02+1
				
				jsr MLI
				.DA #MLIREAD
				.DA MLIREAD02
				bcs .98
				jsr .9
				
				jsr A2osX.KMLOAD
				
.98				pha
				jsr .9
				pla
				sec
				rts
				
.9				jsr MLI
				.DA #MLICLOSE
				.DA MLICLOSE02
.99				rts
*--------------------------------------
				.INB /A2OSX.SRC/X.PRINTF.S
*--------------------------------------
MSG.INIT0		.AZ "A2osX[Stage0]:Init\n"
MSG.SYSMEM		.AZ "Checking System Memory..."
MSG.SYSMEM.OK	.AZ "128k Detected.\n"
MSG.SYSMEM.KO	.AZ "A2osX Requires At Least 128k Memory.\n"

MSG.CPU			.AZ "Checking CPU..."
MSG.CPU.OK		.AZ "65C02 CPU (or higher) Detected.\n"
MSG.CPU.KO		.AZ "A2osX Requires At Least A 65C02 CPU.\n"

MSG.RAMDRV		.AZ "Checking ProDOS RamDrive..."
MSG.RAMDRV.OK	.AZ "Successfully Disabled.\n"
MSG.RAMDRV.KO0	.AZ "Not Detected.\n"
MSG.RAMDRV.KO1	.AZ "Uninstall Failed !!!\n"

MSG.BOOTPREFIX	.AZ "Boot Prefix:"

MSG.KMENUM		.AZ "Looking For Kernel Modules...\n"
MSG.KMLOAD		.AZ "***Loading KM : %S\n"
MSG.INIT0OK		.AZ "A2osX[Stage0]:Complete.\n"
*--------------------------------------
MLIGETPREFIX01	.DA #1
				.DA Boot.Prefix
MLIONLINE01		.DA #2
				.DA #0
				.DA MLIONLINE01BUF
MLIONLINE01BUF	.BS 256				
MLIOPEN01		.DA #3					For DIR listing
				.DA Boot.Prefix
				.DA A2osX.OpenBuff1		
				.BS 1
MLIREAD01		.DA #4
				.BS 1
				.DA A2osX.ReadBuff		Load address Dir Blocks
				.DA $200				Maxlen of Dir Blocks (512)
				.BS 2
MLICLOSE01		.DA #1
				.BS 1
MLIOPEN02		.DA #3
				.DA KM.Filename
				.DA A2osX.OpenBuff2
				.BS 1
MLIREAD02		.DA #4
				.BS 1
				.DA A2osX.KMLOAD		Load address for KMs
				.DA A2osX.KMMAXLEN		Maxlen of KM
				.BS 2
MLICLOSE02		.DA #1
				.BS 1
MLIQUIT01		.DA #4
				.DA #0
				.DA 0
				.DA #0
				.DA 0
*--------------------------------------
SYS				>PSTR "SYS/"
KM.PREFIX		>PSTR "KM."
*--------------------------------------
				.EP
*--------------------------------------
A2osX.QC.B.Start
				.INB /A2OSX.SRC/A2OSX.S.QC
*--------------------------------------
MAN
SAVE /A2OSX.SRC/A2OSX.S
ASM