Apple-2-SW/A2osX
1
0
Fork 0
mirror of https://github.com/A2osX/A2osX.git synced 2024-06-07 17:29:34 +00:00
Code Issues Projects Releases Wiki Activity

Kernel 0.9.1 : SSC, irq & various bugfix

Browse Source
This commit is contained in:
Rémy GIBERT 2018-04-14 13:44:24 +01:00
parent 3973ebbbed
commit 842ea803de
1 changed files with 42 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

75
DRV/X.SSC.DRV.S.txt
View File

@ -100,11 +100,17 @@ CS.END
DEVSIG.Offset .HS 05070B0C
DEVSIG.Value .HS 38180131
DEVSIG.Length .EQ DEVSIG.Value-DEVSIG.Offset
MSG.DETECT .DO SSCIRQ=1
.AZ "Apple SSC (Super Serial Card,//c Serial Port) Driver (IRQ Enabled).\r\n"
.ELSE
.AZ "Apple SSC (Super Serial Card,//c Serial Port) Driver.\r\n"
.FIN
MSG.DETECT.OK .AZ "SSC Installed As Device : %s\r\n"
MSG.DETECT.KO .AZ "No SSC Found.\r\n"
ARGS .BS 2
@ -113,11 +119,17 @@ ARGS .BS 2
*--------------------------------------
DEV.HEADER cld
jmp (DRV.CS.START,x)
.DO SSCIRQ=1
.DA #S.DEV.S.WRITE+S.DEV.S.READ+S.DEV.S.IRQ
.ELSE
.DA #S.DEV.S.WRITE+S.DEV.S.READ
.FIN
.BS 6
DEV.HEADER.NAME .AZ "COM1" NAME
*--------------------------------------
@ -133,9 +145,13 @@ DRV.CS.START .DA STATUS
.DA CLOSE
.DA READ
.DA WRITE
.DO SSCIRQ=1
.DA IRQ
.FIN
L.STAT .DA STAT
.DA 0 end or relocation
*--------------------------------------
@ -152,24 +168,21 @@ OPEN php
stz SSC.RESET-$8F,x
lda #SSC.CTL.CLKINT+SSC.CTL.B9600+SSC.CTL.8D+SSC.CTL.1S+SSC.CMD.NOP
sta SSC.CTL-$8F,x
.DO SSCIRQ=1
lda #SSC.CMD.TEIRQ+SSC.CMD.TE+SSC.CMD.DTR
sta SSC.CMD-$8F,x
stz INBUF.HEAD
stz INBUF.TAIL
stz OUTBUF.HEAD
stz OUTBUF.TAIL
lda #SSC.CTL.CLKINT+SSC.CTL.B9600+SSC.CTL.8D+SSC.CTL.1S+SSC.CMD.NOP
sta SSC.CTL-$8F,x
lda #SSC.CMD.TEIRQ+SSC.CMD.TE+SSC.CMD.DTR
sta SSC.CMD-$8F,x
.ELSE
lda #SSC.CTL.CLKINT+SSC.CTL.B9600+SSC.CTL.8D+SSC.CTL.1S+SSC.CMD.NOP
sta SSC.CTL-$8F,x
lda #SSC.CMD.RIRQDIS+SSC.CMD.TE+SSC.CMD.DTR
sta SSC.CMD-$8F,x
@ -196,7 +209,7 @@ READ .DO SSCIRQ=1
sei
ldx INBUF.TAIL
cpx INBUF.HEAD
beq .9
beq .2
lda INBUF,x
inx
@ -211,8 +224,14 @@ READ .DO SSCIRQ=1
clc
rts
.9 plp
lda #0
.2 ldx DEVSLOTn08F
lda SSC.STATUS-$8F,x
and #SSC.STATUS.nDSR true when 0
beq .90
lda #26 EOF
.90 plp
sec
rts
@ -220,7 +239,6 @@ READ .DO SSCIRQ=1
ldx DEVSLOTn08F
lda SSC.STATUS-$8F,x
bmi *
and #SSC.STATUS.RDRF incoming char?
beq .9
@ -243,9 +261,9 @@ WRITE .DO SSCIRQ=1
ldx DEVSLOTn08F
* lda SSC.STATUS-$8F,x
* bit #SSC.STATUS.DCD+SSC.STATUS.DSR true when 0
* bne .9
lda SSC.STATUS-$8F,x
bit #SSC.STATUS.nDSR true when 0
bne .90
lda OUTBUF.HEAD
cmp OUTBUF.TAIL Buffer Empty?
@ -276,13 +294,11 @@ WRITE .DO SSCIRQ=1
tya
sta OUTBUF,x
* ldx DEVSLOTn08F
* lda #SSC.CMD.TEIRQ+SSC.CMD.DTR
* sta SSC.CMD-$8F,x
plp
clc
rts
.90 lda #26 EOF
.9 plp
sec
rts
@ -325,36 +341,33 @@ IRQ ldx DEVSLOTn08F
bpl .9 IRQ from this device ? no, exit !!!!Applewin bug #308!!!!
bit #SSC.STATUS.RDRF incoming char?
beq .3
beq .2
*------------ IRQ In
pha
.1 lda INBUF.HEAD
lda INBUF.HEAD
tay save actual head for later
inc
and #BUF.MASK
cmp INBUF.TAIL
beq .2 buffer full, discard and exit
beq .1 buffer full, discard and exit
sta INBUF.HEAD
lda SSC.DATA-$8F,x read data to clear IRQ
sta INBUF,y
.2 pla
* lda SSC.STATUS-$8F,x
* bit #SSC.STATUS.RDRF incoming char?
* bne .1
.1 pla
*------------ IRQ Out
.3 bit #SSC.STATUS.TDRE
.2 bit #SSC.STATUS.TDRE
beq .8 no transmition possible....
.4 ldy OUTBUF.TAIL something to transmit ?
ldy OUTBUF.TAIL something to transmit ?
cpy OUTBUF.HEAD
beq .8 in that case, HOW TO CLEAR IRQ ????
@ -367,10 +380,6 @@ IRQ ldx DEVSLOTn08F
sta OUTBUF.TAIL
* lda SSC.STATUS-$8F,x
* bit #SSC.STATUS.TDRE
* bne .4
.8 clc
rts