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Kernel version 0.8 : KM.VSDRIVE, work in progress

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This commit is contained in:
Rémy GIBERT 2016-12-15 17:49:33 +01:00
parent 8f5c5f448b
commit 63e97cd7d5
1 changed files with 53 additions and 35 deletions
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88
SYS/KM.VSDRIVE.S.txt
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@ -97,6 +97,17 @@ SSC.Detect stz TmpPtr1
asl
asl
asl
tax
stz SSC.RESET,x
lda #SSC.CTL.B115200+SSC.CTL.8D+SSC.CTL.1S+SSC.CMD.NOP
sta SSC.CTL,x
lda #SSC.CMD.RIRQDIS
sta SSC.CMD,x
txa
clc
rts
@ -235,7 +246,7 @@ DRV.Slotn0 ldx #$ff Self Modified
inc W=2,R=3
ldx DRV.UNITNUM
bpl .1
adc #2
adc #2 CC from bcs .9
.1 jsr DRV.DO.CMD
bcs .9
@ -251,16 +262,15 @@ DRV.Slotn0 ldx #$ff Self Modified
*--------------------------------------
DRV.DO.CMD sta DRV.CmdBuf.Cmd store cmd
eor #VS.CMD
sta DRV.CmdBuf.Sum
eor DRV.BLKNUM
eor DRV.BLKNUM+1
ldy DRV.BLKNUM
sty DRV.CmdBuf.Blk
lda DRV.BLKNUM
sta DRV.CmdBuf.Blk
eor DRV.CmdBuf.Sum
sta DRV.CmdBuf.Sum
lda DRV.BLKNUM+1
sta DRV.CmdBuf.Blk+1
eor DRV.CmdBuf.Sum
ldy DRV.BLKNUM+1
sty DRV.CmdBuf.Blk+1
sta DRV.CmdBuf.Sum
lda DRV.BUFF
@ -268,14 +278,7 @@ DRV.DO.CMD sta DRV.CmdBuf.Cmd store cmd
lda DRV.BUFF+1
inc
sta DRV.A2H
stz SSC.RESET,x
lda #SSC.CTL.B115200+SSC.CTL.8D+SSC.CTL.1S+SSC.CMD.NOP
sta SSC.CTL,x
lda #SSC.CMD.RIRQDIS
sta SSC.CMD,x
* send CMD+CS
ldy #0
@ -303,16 +306,15 @@ DRV.DO.CMD sta DRV.CmdBuf.Cmd store cmd
cmp #1
bne .6
* Read block
iny Skip Checksum
* Read block
ldy #4 Read 4 bytes
.3 jsr DRV.SSCGet
bcs .9
sta DRV.CmdBuf,y
eor DRV.CmdBuf.Sum
sta DRV.CmdBuf.Sum
iny
cpy #9
dey
bne .3
* recieve Header CS and check
@ -323,6 +325,7 @@ DRV.DO.CMD sta DRV.CmdBuf.Cmd store cmd
bne .9
ldy #0
.4 jsr DRV.SSCGet
bcs .9
sta (DRV.BUFF),y
@ -346,13 +349,28 @@ DRV.DO.CMD sta DRV.CmdBuf.Cmd store cmd
rts
* Write Block
.6
.6 ldy #0
.7 lda (DRV.BUFF),y
jsr DRV.SSCSend
bcs .9
iny
bne .7
.8 lda (DRV.A2L),y
jsr DRV.SSCSend
bcs .9
iny
bne .8
clc
jsr DRV.BufCheckSum
jsr DRV.SSCSend
bcs .9
rts
.9 sec
.9
DRV.CS sec
rts
*--------------------------------------
DRV.CmdBuf .DA #VS.CMD
@ -369,27 +387,25 @@ DRV.BufCheckSum lda #0
bne .1
rts
*--------------------------------------
DRV.SSCSend pha
DRV.SSCSend sta .2+1
.1 lda SSC.STATUS,x
bit #SSC.STATUS.DCD+SSC.STATUS.DSR
beq .9
beq DRV.CS
and #SSC.STATUS.TDRE Outgoing char?
beq .1
pla
.2 lda #$ff
sta SSC.DATA,x
clc
rts
.9 pla
sec
rts
*--------------------------------------
DRV.SSCGet
.1 lda SSC.STATUS,x
bit #SSC.STATUS.DCD+SSC.STATUS.DSR
beq DRV.CS
and #SSC.STATUS.RDRF incoming char?
beq .1
@ -399,12 +415,14 @@ DRV.SSCGet
*--------------------------------------
.EP
*--------------------------------------
.LIST ON
DRV.SIZE .EQ *-DRV
.LIST OFF
*--------------------------------------
* CONTROL SECTION :
*--------------------------------------
.DO DRV.SIZE>255
ERROR:DRV.SIZE too big
* ERROR:DRV.SIZE too big
.FIN
*--------------------------------------
MAN