mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-23 15:58:05 +11:00
Add layer of indirection to EMIT
This would allow things like temporary giving control to the *CL line on the TRS-80. For example... A very far fetched example. Not at all the only *raison d'etre* of the layer...
This commit is contained in:
Virgil Dupras
parent
5bf3baff05
commit
ecca70c7f3
18
blk/081
18
blk/081
@ -1,16 +1,16 @@
|
||||
(cont.)
|
||||
RAMSTART INITIAL_SP +53 readln's variables
|
||||
+02 CURRENT +55 adev's variables
|
||||
+04 HERE +57 blk's variables
|
||||
+06 C<?* +59 z80a's variables
|
||||
+08 C<* override +5b FUTURE USES
|
||||
+0a PARSEPTR +70 DRIVERS
|
||||
+0c C<* +80 RAMEND
|
||||
+0e WORDBUF
|
||||
RAMSTART INITIAL_SP +55 EMITPTR override
|
||||
+02 CURRENT +57 readln's variables
|
||||
+04 HERE +59 blk's variables
|
||||
+06 C<? +5b z80a's variables
|
||||
+08 C<* override +5d adev's variables
|
||||
+0a PARSEPTR +5f FUTURE USES
|
||||
+0c C<* +70 DRIVERS
|
||||
+0e WORDBUF +80 RAMEND
|
||||
+2e BOOT C< PTR
|
||||
+4e INTJUMP
|
||||
+51 CURRENTPTR
|
||||
|
||||
+53 EMITPTR
|
||||
|
||||
|
||||
(cont.)
|
||||
|
||||
4
blk/143
4
blk/143
@ -1,9 +1,9 @@
|
||||
: ADEVMEM+ 0x55 RAM+ @ + ;
|
||||
: ADEVMEM+ 0x5d RAM+ @ + ;
|
||||
: A@* 0 ADEVMEM+ ;
|
||||
: A!* 2 ADEVMEM+ ;
|
||||
|
||||
: ADEV$
|
||||
H@ 0x55 RAM+ !
|
||||
H@ 0x5d RAM+ !
|
||||
4 ALLOT
|
||||
['] C@ A@* !
|
||||
['] C! A!* !
|
||||
|
||||
4
blk/213
4
blk/213
@ -1,9 +1,9 @@
|
||||
: Z80AMEM+ 0x59 RAM+ @ + ;
|
||||
: Z80AMEM+ 0x5b RAM+ @ + ;
|
||||
: ORG 0 Z80AMEM+ ;
|
||||
: BIN( 2 Z80AMEM+ ;
|
||||
: L1 4 Z80AMEM+ ; : L2 6 Z80AMEM+ ;
|
||||
: L3 8 Z80AMEM+ ; : L4 10 Z80AMEM+ ;
|
||||
: Z80A$ H@ 0x59 RAM+ ! 12 ALLOT 0 BIN( ! ;
|
||||
: Z80A$ H@ 0x5b RAM+ ! 12 ALLOT 0 BIN( ! ;
|
||||
: A 7 ; : B 0 ; : C 1 ; : D 2 ;
|
||||
: E 3 ; : H 4 ; : L 5 ; : (HL) 6 ;
|
||||
: BC 0 ; : DE 1 ; : HL 2 ; : AF 3 ; : SP AF ;
|
||||
|
||||
17
blk/355
Normal file
17
blk/355
Normal file
@ -0,0 +1,17 @@
|
||||
IFZ, ( end of buffer reached? )
|
||||
( yes )
|
||||
( +4 == ACIA( )
|
||||
ACIA_MEM 4 + LDHL(nn),
|
||||
( +2 == ACIAW> )
|
||||
ACIA_MEM 2+ LD(nn)HL,
|
||||
THEN,
|
||||
THEN,
|
||||
THEN,
|
||||
DE POPqq,
|
||||
HL POPqq,
|
||||
AF POPqq,
|
||||
EI,
|
||||
RETI,
|
||||
|
||||
|
||||
|
||||
16
blk/356
16
blk/356
@ -1,16 +0,0 @@
|
||||
IFZ, ( end of buffer reached? )
|
||||
( yes )
|
||||
( +4 == ACIA( )
|
||||
ACIA_MEM 4 + LDHL(nn),
|
||||
( +2 == ACIAW> )
|
||||
ACIA_MEM 2+ LD(nn)HL,
|
||||
THEN,
|
||||
THEN,
|
||||
THEN,
|
||||
DE POPqq,
|
||||
HL POPqq,
|
||||
AF POPqq,
|
||||
EI,
|
||||
RETI,
|
||||
|
||||
|
||||
30
blk/359
30
blk/359
@ -1,16 +1,16 @@
|
||||
: ACIA$
|
||||
H@ DUP DUP ACIA( ! ACIAR> !
|
||||
1+ ACIAW> ! ( write index starts one position later )
|
||||
ACIABUFSZ ALLOT
|
||||
H@ ACIA) !
|
||||
( setup ACIA
|
||||
CR7 (1) - Receive Interrupt enabled
|
||||
CR6:5 (00) - RTS low, transmit interrupt disabled.
|
||||
CR4:2 (101) - 8 bits + 1 stop bit
|
||||
CR1:0 (10) - Counter divide: 64 )
|
||||
0b10010110 ACIA_CTL PC!
|
||||
( setup interrupt )
|
||||
0xc3 0x4e RAM+ C! ( c3==JP, 4e==INTJUMP )
|
||||
['] ~ACIA 0x4f RAM+ !
|
||||
(im1)
|
||||
: KEY
|
||||
( inc then fetch )
|
||||
ACIAR> @ 1+ DUP ACIA) @ = IF
|
||||
DROP ACIA( @
|
||||
THEN
|
||||
( As long as R> == W>-1, it means that buffer is empty )
|
||||
BEGIN DUP ACIAW> @ = NOT UNTIL
|
||||
ACIAR> !
|
||||
ACIAR> @ C@
|
||||
;
|
||||
: (emit)
|
||||
( As long at CTL bit 1 is low, we are transmitting. wait )
|
||||
BEGIN ACIA_CTL PC@ 0x02 AND UNTIL
|
||||
( The way is clear, go! )
|
||||
ACIA_IO PC!
|
||||
;
|
||||
|
||||
33
blk/360
33
blk/360
@ -1,16 +1,17 @@
|
||||
: KEY
|
||||
( inc then fetch )
|
||||
ACIAR> @ 1+ DUP ACIA) @ = IF
|
||||
DROP ACIA( @
|
||||
THEN
|
||||
( As long as R> == W>-1, it means that buffer is empty )
|
||||
BEGIN DUP ACIAW> @ = NOT UNTIL
|
||||
ACIAR> !
|
||||
ACIAR> @ C@
|
||||
;
|
||||
: EMIT
|
||||
( As long at CTL bit 1 is low, we are transmitting. wait )
|
||||
BEGIN ACIA_CTL PC@ 0x02 AND UNTIL
|
||||
( The way is clear, go! )
|
||||
ACIA_IO PC!
|
||||
;
|
||||
: ACIA$
|
||||
H@ DUP DUP ACIA( ! ACIAR> !
|
||||
1+ ACIAW> ! ( write index starts one position later )
|
||||
ACIABUFSZ ALLOT
|
||||
H@ ACIA) !
|
||||
( setup ACIA
|
||||
CR7 (1) - Receive Interrupt enabled
|
||||
CR6:5 (00) - RTS low, transmit interrupt disabled.
|
||||
CR4:2 (101) - 8 bits + 1 stop bit
|
||||
CR1:0 (10) - Counter divide: 64 )
|
||||
0b10010110 ACIA_CTL PC!
|
||||
( setup interrupt )
|
||||
0xc3 0x4e RAM+ C! ( c3==JP, 4e==INTJUMP )
|
||||
['] ~ACIA 0x4f RAM+ !
|
||||
['] (emit) 0x53 RAM+ ! ( 53==EMITPTR )
|
||||
(im1) ;
|
||||
|
||||
|
||||
8
blk/405
8
blk/405
@ -1,15 +1,15 @@
|
||||
: BOOT
|
||||
0x02 RAM+ CURRENT* !
|
||||
LIT< (parse) (find) DROP (parse*) !
|
||||
( 2e == SYSTEM SCRATCHPAD )
|
||||
CURRENT @ 0x2e RAM+ !
|
||||
CURRENT @ 0x2e RAM+ ! ( 2e == BOOT C< PTR)
|
||||
0 0x08 RAM+ ! ( 08 == C<* override )
|
||||
LIT< (emit) (find) DROP 0x53 RAM+ ! ( 53 == EMITPTR )
|
||||
0 0x55 RAM+ ! ( 55 == EMITPTR override )
|
||||
( 0c == C<* )
|
||||
LIT< (boot<) (find) DROP 0x0c RAM+ !
|
||||
( boot< always has a char waiting. 06 == C<?* )
|
||||
1 0x06 RAM+ !
|
||||
LIT< INIT (find)
|
||||
IF EXECUTE
|
||||
ELSE DROP INTERPRET THEN
|
||||
IF EXECUTE ELSE DROP INTERPRET THEN
|
||||
;
|
||||
|
||||
|
||||
4
blk/442
4
blk/442
@ -1,4 +1,6 @@
|
||||
( EMIT is needed for this unit to compile )
|
||||
: EMIT
|
||||
( 0x53==EMITPTR 0x55==override )
|
||||
85 RAM+ @ DUP NOT IF DROP 83 RAM+ @ THEN EXECUTE ;
|
||||
|
||||
: (print)
|
||||
BEGIN
|
||||
|
||||
2
blk/453
2
blk/453
@ -1,5 +1,5 @@
|
||||
64 CONSTANT INBUFSZ
|
||||
: RDLNMEM+ 0x53 RAM+ @ + ;
|
||||
: RDLNMEM+ 0x57 RAM+ @ + ;
|
||||
( current position in INBUF )
|
||||
: IN> 0 RDLNMEM+ ;
|
||||
( points to INBUF )
|
||||
|
||||
4
blk/457
4
blk/457
@ -1,7 +1,7 @@
|
||||
( Initializes the readln subsystem )
|
||||
: RDLN$
|
||||
( 53 == rdln's memory )
|
||||
H@ 0x53 RAM+ !
|
||||
( 57 == rdln's memory )
|
||||
H@ 0x57 RAM+ !
|
||||
( 2 for IN>, plus 2 for extra bytes after buffer: 1 for
|
||||
the last typed 0x0a and one for the following NULL. )
|
||||
INBUFSZ 4 + ALLOT
|
||||
|
||||
2
blk/464
2
blk/464
@ -1,4 +1,4 @@
|
||||
: BLKMEM+ 0x57 RAM+ @ + ;
|
||||
: BLKMEM+ 0x59 RAM+ @ + ;
|
||||
( n -- Fetches block n and write it to BLK( )
|
||||
: BLK@* 0 BLKMEM+ ;
|
||||
( n -- Write back BLK( to storage at block n )
|
||||
|
||||
2
blk/465
2
blk/465
@ -1,5 +1,5 @@
|
||||
: BLK$
|
||||
H@ 0x57 RAM+ !
|
||||
H@ 0x59 RAM+ !
|
||||
( 1024 for the block, 8 for variables )
|
||||
1032 ALLOT
|
||||
( LOAD detects end of block with ASCII EOT. This is why
|
||||
|
||||
2
blk/493
2
blk/493
@ -4,7 +4,7 @@ CODE KEY
|
||||
L A LDrr, H 0 LDrn,
|
||||
HL PUSHqq,
|
||||
;CODE
|
||||
CODE EMIT
|
||||
CODE (emit)
|
||||
BC POPqq, ( c == @DSP arg )
|
||||
chkPS,
|
||||
A 0x02 LDrn, ( @DSP )
|
||||
|
||||
BIN
emul/forth.bin
BIN
emul/forth.bin
Binary file not shown.
@ -16,7 +16,7 @@ H@ 256 /MOD 2 PC! 2 PC!
|
||||
( Update LATEST )
|
||||
PC ORG @ 8 + !
|
||||
," CURRENT @ HERE ! "
|
||||
," : EMIT 0 PC! ; "
|
||||
," : (emit) 0 PC! ; CURRENT @ 83 RAM+ ! "
|
||||
," : KEY 0 PC@ ; "
|
||||
422 470 XPACKR
|
||||
," ' KEY 12 RAM+ ! "
|
||||
|
||||
Loading…
Reference in New Issue
Block a user