mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-24 01:18:06 +11:00
sms/kbd: begin rewriting ps2ctl to Forth
So far, the resulting binary matches.
This commit is contained in:
parent
8c4c879a65
commit
177e70580f
2
blk/665
2
blk/665
@ -2,7 +2,7 @@
|
|||||||
: OPRdK CREATE C, DOES> C@ ( rd K op )
|
: OPRdK CREATE C, DOES> C@ ( rd K op )
|
||||||
OVER _r256c 0xf0 AND 4 RSHIFT OR ( rd K op' )
|
OVER _r256c 0xf0 AND 4 RSHIFT OR ( rd K op' )
|
||||||
ROT _r16+c 4 LSHIFT ROT 0x0f AND OR ( op' rdK ) A, A, ;
|
ROT _r16+c 4 LSHIFT ROT 0x0f AND OR ( op' rdK ) A, A, ;
|
||||||
0x70 OPRdK ANDI, 0x30 OPRdK CPI, 0x0e OPRdK LDI,
|
0x70 OPRdK ANDI, 0x30 OPRdK CPI, 0xe0 OPRdK LDI,
|
||||||
0x60 OPRdK ORI, 0x40 OPRdK SBCI, 0x60 OPRdK SBR,
|
0x60 OPRdK ORI, 0x40 OPRdK SBCI, 0x60 OPRdK SBR,
|
||||||
0x50 OPRdK SUBI,
|
0x50 OPRdK SUBI,
|
||||||
|
|
||||||
|
@ -1,2 +1,2 @@
|
|||||||
#!/bin/sh
|
#!/bin/sh
|
||||||
echo -e "660 LOAD H@ 256 /MOD 2 PC! 2 PC! \n$(cat -)\nH@ 256 /MOD 2 PC! 2 PC! " | ./stage
|
echo -e "660 LOAD H@ ORG !\n$(cat -)\nORG @ 256 /MOD 2 PC! 2 PC! H@ 256 /MOD 2 PC! 2 PC! " | ./stage
|
||||||
|
@ -1,13 +1,9 @@
|
|||||||
PROGNAME = ps2ctl
|
PROGNAME = ps2ctl
|
||||||
AVRDUDEMCU ?= t45
|
AVRDUDEMCU ?= t45
|
||||||
AVRDUDEARGS ?= -c usbtiny -P usb
|
AVRDUDEARGS ?= -c usbtiny -P usb
|
||||||
TARGETS = $(PROGNAME).bin os.sms
|
TARGETS = $(PROGNAME).bin
|
||||||
BASEDIR = ../../..
|
BASEDIR = ../../..
|
||||||
ZASM = $(BASEDIR)/emul/zasm/zasm
|
EDIR = $(BASEDIR)/emul
|
||||||
KERNEL = $(BASEDIR)/kernel
|
|
||||||
APPS = $(BASEDIR)/apps
|
|
||||||
AVRA = $(BASEDIR)/emul/zasm/avra
|
|
||||||
AVRINC = $(BASEDIR)/avr
|
|
||||||
|
|
||||||
# Rules
|
# Rules
|
||||||
|
|
||||||
@ -19,11 +15,8 @@ all: $(TARGETS)
|
|||||||
send: $(PROGNAME).bin
|
send: $(PROGNAME).bin
|
||||||
avrdude $(AVRDUDEARGS) -p $(AVRDUDEMCU) -U flash:w:$(PROGNAME).bin
|
avrdude $(AVRDUDEARGS) -p $(AVRDUDEMCU) -U flash:w:$(PROGNAME).bin
|
||||||
|
|
||||||
$(PROGNAME).bin: $(PROGNAME).asm
|
$(PROGNAME).bin: $(PROGNAME).fs
|
||||||
$(AVRA) $(AVRINC) < $(PROGNAME).asm > $@
|
cd $(EDIR) && ./avra.sh < ../recipes/sms/kbd/$(PROGNAME).fs > ../recipes/sms/kbd/$@
|
||||||
|
|
||||||
os.sms: glue.asm
|
|
||||||
$(ZASM) $(KERNEL) $(APPS) < glue.asm > $@
|
|
||||||
|
|
||||||
clean:
|
clean:
|
||||||
rm -f $(TARGETS)
|
rm -f $(TARGETS)
|
||||||
|
53
recipes/sms/kbd/ps2ctl.fs
Normal file
53
recipes/sms/kbd/ps2ctl.fs
Normal file
@ -0,0 +1,53 @@
|
|||||||
|
( Receives keystrokes from PS/2 keyboard and send them to the
|
||||||
|
'164. On the PS/2 side, it works the same way as the controller
|
||||||
|
in the rc2014/ps2 recipe. However, in this case, what we have
|
||||||
|
on the other side isn't a z80 bus, it's the one of the two
|
||||||
|
controller ports of the SMS through a DB9 connector.
|
||||||
|
|
||||||
|
The PS/2 related code is copied from rc2014/ps2 without much
|
||||||
|
change. The only differences are that it pushes its data to a
|
||||||
|
'164 instead of a '595 and that it synchronizes with the SMS
|
||||||
|
with a SR latch, so we don't need PCINT. We can also afford to
|
||||||
|
run at 1MHz instead of 8.
|
||||||
|
|
||||||
|
*** Register Usage ***
|
||||||
|
|
||||||
|
GPIOR0 flags:
|
||||||
|
0 - when set, indicates that the DATA pin was high when we
|
||||||
|
received a bit through INT0. When we receive a bit, we set
|
||||||
|
flag T to indicate it.
|
||||||
|
|
||||||
|
R16: tmp stuff
|
||||||
|
R17: recv buffer. Whenever we receive a bit, we push it in
|
||||||
|
there.
|
||||||
|
R18: recv step:
|
||||||
|
- 0: idle
|
||||||
|
- 1: receiving data
|
||||||
|
- 2: awaiting parity bit
|
||||||
|
- 3: awaiting stop bit
|
||||||
|
R19: Register used for parity computations and tmp value in
|
||||||
|
some other places
|
||||||
|
R20: data being sent to the '164
|
||||||
|
Y: pointer to the memory location where the next scan code from
|
||||||
|
ps/2 will be written.
|
||||||
|
Z: pointer to the next scan code to push to the 595 )
|
||||||
|
|
||||||
|
0x015f CONSTANT RAMEND
|
||||||
|
0x11 CONSTANT GPIOR0
|
||||||
|
0x16 CONSTANT PINB
|
||||||
|
1 CONSTANT DATA
|
||||||
|
|
||||||
|
H@ ORG !
|
||||||
|
L1 FLBL, ( main )
|
||||||
|
L2 FLBL, ( hdlINT0 )
|
||||||
|
|
||||||
|
( Read DATA and set GPIOR0/0 if high. Then, set flag T.
|
||||||
|
no SREG fiddling because no SREG-modifying instruction )
|
||||||
|
RJMPOP L2 FLBL! ( hdlINT0 )
|
||||||
|
PINB DATA SBIC,
|
||||||
|
GPIOR0 0 SBI,
|
||||||
|
SET,
|
||||||
|
RETI,
|
||||||
|
|
||||||
|
RJMPOP L1 FLBL! ( main )
|
||||||
|
16 RAMEND 0xff AND LDI,
|
Loading…
Reference in New Issue
Block a user