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Integrate RDLN input buffer into sysvars

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In the beginning of Collapse OS' Forth version, the readline sub-
system was optional. This is why we had this separate RDLN$ routine
and that the input buffer was allocated at boot time.

It's been a while since the RDLN system has been made mandatory, but
we still paid the complexity tax of this separation. Not anymore.
This commit is contained in:
Virgil Dupras 2021-01-02 14:20:50 -05:00
parent 64f0f6716e
commit d09de0a0d3
19 changed files with 45 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/8086/pcat/blk.fs
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@ -75,7 +75,7 @@ CODE AT-XY ( x y )
( ----- 612 ) ( ----- 612 )
0xff00 CONSTANT RS_ADDR 0xff00 CONSTANT RS_ADDR
0xfffa CONSTANT PS_ADDR 0xfffa CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xa0 - CONSTANT SYSVARS
30 LOAD ( 8086 asm ) 30 LOAD ( 8086 asm )
262 LOAD ( xcomp ) 270 LOAD ( xcomp overrides ) 262 LOAD ( xcomp ) 270 LOAD ( xcomp overrides )
445 461 LOADR ( 8086 boot code ) 445 461 LOADR ( 8086 boot code )

4
arch/z80/rc2014/blk.fs
View File

@ -71,7 +71,7 @@ CODE SIOB>
( ----- 619 ) ( ----- 619 )
( RC2014 classic with MC6850 ) ( RC2014 classic with MC6850 )
0xff00 CONSTANT RS_ADDR 0xfffa CONSTANT PS_ADDR 0xff00 CONSTANT RS_ADDR 0xfffa CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xa0 - CONSTANT SYSVARS
0x8000 CONSTANT HERESTART 0x8000 CONSTANT HERESTART
0x80 CONSTANT 6850_CTL 0x81 CONSTANT 6850_IO 0x80 CONSTANT 6850_CTL 0x81 CONSTANT 6850_IO
4 CONSTANT SPI_DATA 5 CONSTANT SPI_CTL 1 CONSTANT SDC_DEVID 4 CONSTANT SPI_DATA 5 CONSTANT SPI_CTL 1 CONSTANT SDC_DEVID
@ -88,7 +88,7 @@ PC ORG @ 8 + ! ( Update LATEST )
( ----- 620 ) ( ----- 620 )
( RC2014 classic with SIO ) ( RC2014 classic with SIO )
0xff00 CONSTANT RS_ADDR 0xfffa CONSTANT PS_ADDR 0xff00 CONSTANT RS_ADDR 0xfffa CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xa0 - CONSTANT SYSVARS
0x8000 CONSTANT HERESTART 0x8000 CONSTANT HERESTART
0x80 CONSTANT SIOA_CTL 0x81 CONSTANT SIOA_DATA 0x80 CONSTANT SIOA_CTL 0x81 CONSTANT SIOA_DATA
0x82 CONSTANT SIOB_CTL 0x83 CONSTANT SIOB_DATA 0x82 CONSTANT SIOB_CTL 0x83 CONSTANT SIOB_DATA

8
arch/z80/sms/xcomp.fs
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@ -2,16 +2,16 @@
0xdd00 CONSTANT RS_ADDR 0xdd00 CONSTANT RS_ADDR
( Memory register at the end of RAM. Must not overwrite ) ( Memory register at the end of RAM. Must not overwrite )
0xddca CONSTANT PS_ADDR 0xddca CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xb0 - CONSTANT SYSVARS
0xc000 CONSTANT HERESTART 0xc000 CONSTANT HERESTART
0xbf CONSTANT TMS_CTLPORT 0xbf CONSTANT TMS_CTLPORT
0xbe CONSTANT TMS_DATAPORT 0xbe CONSTANT TMS_DATAPORT
SYSVARS 0x70 + CONSTANT GRID_MEM SYSVARS 0xa0 + CONSTANT GRID_MEM
SYSVARS 0x73 + CONSTANT CPORT_MEM SYSVARS 0xa3 + CONSTANT CPORT_MEM
0x3f CONSTANT CPORT_CTL 0x3f CONSTANT CPORT_CTL
0xdc CONSTANT CPORT_D1 0xdc CONSTANT CPORT_D1
0xdd CONSTANT CPORT_D2 0xdd CONSTANT CPORT_D2
SYSVARS 0x74 + CONSTANT PAD_MEM SYSVARS 0xa4 + CONSTANT PAD_MEM
5 LOAD ( z80 assembler ) 5 LOAD ( z80 assembler )
262 LOAD ( xcomp ) 262 LOAD ( xcomp )
524 LOAD ( font compiler ) 524 LOAD ( font compiler )

8
arch/z80/sms/xcompkbd.fs
View File

@ -3,16 +3,16 @@
0xdd00 CONSTANT RS_ADDR 0xdd00 CONSTANT RS_ADDR
( Memory register at the end of RAM. Must not overwrite ) ( Memory register at the end of RAM. Must not overwrite )
0xddca CONSTANT PS_ADDR 0xddca CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xb0 - CONSTANT SYSVARS
0xc000 CONSTANT HERESTART 0xc000 CONSTANT HERESTART
0xbf CONSTANT TMS_CTLPORT 0xbf CONSTANT TMS_CTLPORT
0xbe CONSTANT TMS_DATAPORT 0xbe CONSTANT TMS_DATAPORT
SYSVARS 0x70 + CONSTANT GRID_MEM SYSVARS 0xa0 + CONSTANT GRID_MEM
SYSVARS 0x73 + CONSTANT CPORT_MEM SYSVARS 0xa3 + CONSTANT CPORT_MEM
0x3f CONSTANT CPORT_CTL 0x3f CONSTANT CPORT_CTL
0xdc CONSTANT CPORT_D1 0xdc CONSTANT CPORT_D1
0xdd CONSTANT CPORT_D2 0xdd CONSTANT CPORT_D2
SYSVARS 0x74 + CONSTANT PS2_MEM SYSVARS 0xa4 + CONSTANT PS2_MEM
5 LOAD ( z80 assembler ) 5 LOAD ( z80 assembler )
262 LOAD ( xcomp ) 262 LOAD ( xcomp )
524 LOAD ( font compiler ) 524 LOAD ( font compiler )

8
arch/z80/sms/xcompsdc.fs
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@ -4,16 +4,16 @@
0xdd00 CONSTANT RS_ADDR 0xdd00 CONSTANT RS_ADDR
( Memory register at the end of RAM. Must not overwrite ) ( Memory register at the end of RAM. Must not overwrite )
0xddca CONSTANT PS_ADDR 0xddca CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xb0 - CONSTANT SYSVARS
0xc000 CONSTANT HERESTART 0xc000 CONSTANT HERESTART
0xbf CONSTANT TMS_CTLPORT 0xbf CONSTANT TMS_CTLPORT
0xbe CONSTANT TMS_DATAPORT 0xbe CONSTANT TMS_DATAPORT
SYSVARS 0x70 + CONSTANT GRID_MEM SYSVARS 0xa0 + CONSTANT GRID_MEM
SYSVARS 0x73 + CONSTANT CPORT_MEM SYSVARS 0xa3 + CONSTANT CPORT_MEM
0x3f CONSTANT CPORT_CTL 0x3f CONSTANT CPORT_CTL
0xdc CONSTANT CPORT_D1 0xdc CONSTANT CPORT_D1
0xdd CONSTANT CPORT_D2 0xdd CONSTANT CPORT_D2
SYSVARS 0x74 + CONSTANT PS2_MEM SYSVARS 0xa4 + CONSTANT PS2_MEM
5 LOAD ( z80 assembler ) 5 LOAD ( z80 assembler )
262 LOAD ( xcomp ) 262 LOAD ( xcomp )
524 LOAD ( font compiler ) 524 LOAD ( font compiler )

8
arch/z80/sms/xcomptextmode.fs
View File

@ -4,16 +4,16 @@
0xdd00 CONSTANT RS_ADDR 0xdd00 CONSTANT RS_ADDR
( Memory register at the end of RAM. Must not overwrite ) ( Memory register at the end of RAM. Must not overwrite )
0xddca CONSTANT PS_ADDR 0xddca CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xb0 - CONSTANT SYSVARS
0xc000 CONSTANT HERESTART 0xc000 CONSTANT HERESTART
0xbf CONSTANT TMS_CTLPORT 0xbf CONSTANT TMS_CTLPORT
0xbe CONSTANT TMS_DATAPORT 0xbe CONSTANT TMS_DATAPORT
SYSVARS 0x70 + CONSTANT GRID_MEM SYSVARS 0xa0 + CONSTANT GRID_MEM
SYSVARS 0x73 + CONSTANT CPORT_MEM SYSVARS 0xa3 + CONSTANT CPORT_MEM
0x3f CONSTANT CPORT_CTL 0x3f CONSTANT CPORT_CTL
0xdc CONSTANT CPORT_D1 0xdc CONSTANT CPORT_D1
0xdd CONSTANT CPORT_D2 0xdd CONSTANT CPORT_D2
SYSVARS 0x74 + CONSTANT PS2_MEM SYSVARS 0xa4 + CONSTANT PS2_MEM
5 LOAD ( z80 assembler ) 5 LOAD ( z80 assembler )
262 LOAD ( xcomp ) 262 LOAD ( xcomp )
523 LOAD ( font compiler ) 523 LOAD ( font compiler )

8
arch/z80/ti84/xcomp.fs
View File

@ -1,10 +1,10 @@
0xbf00 CONSTANT RS_ADDR 0xbf00 CONSTANT RS_ADDR
0xbffa CONSTANT PS_ADDR 0xbffa CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xb0 - CONSTANT SYSVARS
0x8000 CONSTANT HERESTART 0x8000 CONSTANT HERESTART
SYSVARS 0x70 + CONSTANT LCD_MEM SYSVARS 0xa0 + CONSTANT LCD_MEM
SYSVARS 0x72 + CONSTANT GRID_MEM SYSVARS 0xa2 + CONSTANT GRID_MEM
SYSVARS 0x75 + CONSTANT KBD_MEM SYSVARS 0xa5 + CONSTANT KBD_MEM
0x01 CONSTANT KBD_PORT 0x01 CONSTANT KBD_PORT
5 LOAD ( z80 assembler ) 5 LOAD ( z80 assembler )
262 LOAD ( xcomp ) 262 LOAD ( xcomp )

2
arch/z80/trs80/xcomp.fs
View File

@ -1,6 +1,6 @@
0xff00 CONSTANT RS_ADDR 0xff00 CONSTANT RS_ADDR
0xfffa CONSTANT PS_ADDR 0xfffa CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xa0 - CONSTANT SYSVARS
0 CONSTANT HERESTART 0 CONSTANT HERESTART
5 LOAD ( z80 assembler ) 5 LOAD ( z80 assembler )
262 LOAD ( xcomp ) 262 LOAD ( xcomp )

2
arch/z80/z80mbc2/xcomp.fs
View File

@ -1,5 +1,5 @@
0xff00 CONSTANT RS_ADDR 0xfffa CONSTANT PS_ADDR 0xff00 CONSTANT RS_ADDR 0xfffa CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xa0 - CONSTANT SYSVARS
0 CONSTANT HERESTART 0 CONSTANT HERESTART
5 LOAD ( z80 assembler ) 5 LOAD ( z80 assembler )
262 LOAD ( xcomp ) 262 LOAD ( xcomp )

23
blk.fs
View File

@ -1682,14 +1682,13 @@ with "390 LOAD"
: H@ HERE @ ; : H@ HERE @ ;
: FIND ( w -- a f ) CURRENT @ SWAP _find ; : FIND ( w -- a f ) CURRENT @ SWAP _find ;
: IN> 0x30 RAM+ ; ( current position in INBUF ) : IN> 0x30 RAM+ ; ( current position in INBUF )
: IN( 0x32 RAM+ @ ; ( points to INBUF ) : IN( 0x60 RAM+ ; ( points to INBUF )
: IN) 0x40 ( buffer size ) IN( + ; ( INBUF's end )
: IN$ 0 IN( DUP IN> ! ! ; ( flush input buffer ) : IN$ 0 IN( DUP IN> ! ! ; ( flush input buffer )
: QUIT : QUIT
(resRS) 0 0x08 RAM+ ! ( C<* override ) IN$ (resRS) 0 0x08 RAM+ ! ( C<* override ) IN$
LIT" (main)" FIND DROP EXECUTE LIT" (main)" FIND DROP EXECUTE
; ;
1 33 LOADR+ 1 31 LOADR+
( ----- 354 ) ( ----- 354 )
: ABORT (resSP) QUIT ; : ABORT (resSP) QUIT ;
: = CMP NOT ; : < CMP -1 = ; : > CMP 1 = ; : = CMP NOT ; : < CMP -1 = ; : > CMP 1 = ;
@ -1978,7 +1977,7 @@ SYSVARS 0x55 + :** KEY?
: RDLN ( Read 1 line in input buff and make IN> point to it ) : RDLN ( Read 1 line in input buff and make IN> point to it )
IN$ BEGIN IN$ BEGIN
( buffer overflow? same as if we typed a newline ) ( buffer overflow? same as if we typed a newline )
IN> @ IN) 1- = IF CR ELSE KEY THEN ( c ) IN> @ IN( - 0x3e = IF CR ELSE KEY THEN ( c )
DUP BS? IF DUP BS? IF
IN> @ IN( > IF -1 IN> +! BS EMIT THEN SPC> BS EMIT IN> @ IN( > IF -1 IN> +! BS EMIT THEN SPC> BS EMIT
ELSE DUP LF = IF DROP CR THEN ( same as CR ) ELSE DUP LF = IF DROP CR THEN ( same as CR )
@ -1996,13 +1995,6 @@ SYSVARS 0x55 + :** KEY?
( update C<? flag ) ( update C<? flag )
IN> @ C@ 0 > 0x06 RAM+ ! ( 06 == C<? ) ; IN> @ C@ 0 > 0x06 RAM+ ! ( 06 == C<? ) ;
( ----- 381 ) ( ----- 381 )
( Initializes the readln subsystem )
: RDLN$
H@ 0x32 ( IN(* ) RAM+ !
IN) IN( - ALLOT IN$
['] RDLN< ['] C<* **!
1 0x06 RAM+ ! ( 06 == C<? ) ;
( ----- 382 )
: LIST : LIST
BLK@ BLK@
16 0 DO 16 0 DO
@ -2012,7 +2004,7 @@ SYSVARS 0x55 + :** KEY?
LOOP LOOP
NL> NL>
LOOP ; LOOP ;
( ----- 383 ) ( ----- 382 )
: INTERPRET : INTERPRET
BEGIN BEGIN
WORD DUP @ 0x0401 = ( EOT ) IF DROP EXIT THEN WORD DUP @ 0x0401 = ( EOT ) IF DROP EXIT THEN
@ -2028,7 +2020,7 @@ SYSVARS 0x55 + :** KEY?
is to check whether we're restoring to "_", the word above. is to check whether we're restoring to "_", the word above.
if yes, then we're in a nested load. Also, the 1 in 0x06 is if yes, then we're in a nested load. Also, the 1 in 0x06 is
to avoid tons of "ok" displays. ) to avoid tons of "ok" displays. )
( ----- 384 ) ( ----- 383 )
: LOAD : LOAD
BLK> @ >R ( save restorable variables to RSP ) BLK> @ >R ( save restorable variables to RSP )
0x08 RAM+ @ >R ( 08 == C<* override ) 0x08 RAM+ @ >R ( 08 == C<* override )
@ -2045,7 +2037,7 @@ SYSVARS 0x55 + :** KEY?
ELSE ( not nested ) ELSE ( not nested )
R> 0x08 RAM+ ! R> DROP ( BLK> ) R> 0x08 RAM+ ! R> DROP ( BLK> )
THEN ; THEN ;
( ----- 385 ) ( ----- 384 )
: LOAD+ BLK> @ + LOAD ; : LOAD+ BLK> @ + LOAD ;
( b1 b2 -- ) ( b1 b2 -- )
: LOADR 1+ SWAP DO I DUP . SPC> LOAD LOOP ; : LOADR 1+ SWAP DO I DUP . SPC> LOAD LOOP ;
@ -2062,7 +2054,8 @@ SYSVARS 0x55 + :** KEY?
['] (boot<) ['] C<* **! ['] (boot<) ['] C<* **!
( boot< always has a char waiting. 06 == C<?* ) ( boot< always has a char waiting. 06 == C<?* )
1 0x06 RAM+ ! INTERPRET 1 0x06 RAM+ ! INTERPRET
RDLN$ LIT" _sys" [entry] ['] RDLN< ['] C<* **! IN$
LIT" _sys" [entry]
LIT" Collapse OS" STYPE NL> (main) ; LIT" Collapse OS" STYPE NL> (main) ;
XCURRENT @ _xapply ORG @ 0x04 ( stable ABI BOOT ) + ! XCURRENT @ _xapply ORG @ 0x04 ( stable ABI BOOT ) + !
1 4 LOADR+ 1 4 LOADR+

2
cvm/common.fs
View File

@ -2,7 +2,7 @@
binaries. ) binaries. )
0xff00 CONSTANT RS_ADDR 0xff00 CONSTANT RS_ADDR
0xfffa CONSTANT PS_ADDR 0xfffa CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xb0 - CONSTANT SYSVARS
0 CONSTANT HERESTART 0 CONSTANT HERESTART
: CODE ( natidx -- ) (entry) 0 C, C, ; : CODE ( natidx -- ) (entry) 0 C, C, ;
VARIABLE ORG VARIABLE ORG

2
cvm/forth.fs
View File

@ -3,7 +3,7 @@
DROP COLS /MOD 6 PC! ( y ) 5 PC! ( x ) ; DROP COLS /MOD 6 PC! ( y ) 5 PC! ( x ) ;
: CELL! ( c pos -- ) 0 CURSOR! 0 PC! ; : CELL! ( c pos -- ) 0 CURSOR! 0 PC! ;
SYSVARS 0x70 + CONSTANT GRID_MEM SYSVARS 0xa0 + CONSTANT GRID_MEM
402 403 LOADR ( Grid ) 402 403 LOADR ( Grid )
390 LOAD ( xcomp core high ) 390 LOAD ( xcomp core high )
(entry) _ (entry) _

BIN
cvm/stage.bin
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Binary file not shown.

2
cvm/vm.h
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@ -3,7 +3,7 @@
#define SP_ADDR 0xffff #define SP_ADDR 0xffff
#define RS_ADDR 0xff00 #define RS_ADDR 0xff00
#define SYSVARS RS_ADDR-0x80 #define SYSVARS RS_ADDR-0xb0
#define MEMSIZE 0x10000 #define MEMSIZE 0x10000
typedef uint8_t byte; typedef uint8_t byte;

2
doc/hw/z80/ps2.txt
View File

@ -68,7 +68,7 @@ First, we need a "(ps2kc)" routine (see doc/protocol.txt). In
this case, it's easy, it's ": (ps2kc) 8 PC@ ;". Then, we can this case, it's easy, it's ": (ps2kc) 8 PC@ ;". Then, we can
load PS/2 subsystem. You add "411 414 LOADR". Then, at load PS/2 subsystem. You add "411 414 LOADR". Then, at
initialization, you add "PS2$". You also need to define PS2_MEM initialization, you add "PS2$". You also need to define PS2_MEM
at the top. You can probably use "SYSVARS + 0x7a". at the top. You can probably use "SYSVARS + 0xaa".
The PS/2 subsystem provides "(key)" from "(ps2kc)". The PS/2 subsystem provides "(key)" from "(ps2kc)".

2
doc/hw/z80/sms/ps2.txt
View File

@ -113,7 +113,7 @@ it with /cvm/avra.sh.
We start with the base SMS xcomp and add a few things: We start with the base SMS xcomp and add a few things:
1. at the top: "SYSVARS 0x72 + CONSTANT PS2_MEM" 1. at the top: "SYSVARS 0xa2 + CONSTANT PS2_MEM"
2. After VDP load: "621 LOAD : (ps2kc) (ps2kcB) ;" (that binds 2. After VDP load: "621 LOAD : (ps2kc) (ps2kcB) ;" (that binds
us to port B) us to port B)
3. Right after: "411 414 LOADR" (that gives us "(key)") 3. Right after: "411 414 LOADR" (that gives us "(key)")

8
doc/impl.txt
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@ -153,6 +153,9 @@ fact, they're mostly referred to directly as their numerical
offset along with a comment indicating what this offset refers offset along with a comment indicating what this offset refers
to. to.
SYSVARS occupy 0xa0 bytes in memory in addition to driver mem-
ory, which typically follows SYSVARS.
This system is a bit fragile because every time we change those This system is a bit fragile because every time we change those
offsets, we have to be careful to adjust all system variables offsets, we have to be careful to adjust all system variables
offsets, but thankfully, there aren't many system variables. offsets, but thankfully, there aren't many system variables.
@ -167,9 +170,8 @@ SYSVARS FUTURE USES +3c BLK(*
+0c C<* +53 EMIT ialias +0c C<* +53 EMIT ialias
+0e WORDBUF +55 KEY? ialias +0e WORDBUF +55 KEY? ialias
+2e BOOT C< PTR +57 FUTURE USES +2e BOOT C< PTR +57 FUTURE USES
+30 IN> +30 IN> +60 INPUT BUFFER
+32 IN(* +70 DRIVERS +32 FUTURE USES +a0 DRIVERS
+34 BLK@* +80 RAMEND
+36 BLK!* +36 BLK!*
+38 BLK> +38 BLK>
+3a BLKDTY +3a BLKDTY

2
emul/8086/xcomp.fs
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@ -1,6 +1,6 @@
0xff00 CONSTANT RS_ADDR 0xff00 CONSTANT RS_ADDR
0xfffa CONSTANT PS_ADDR 0xfffa CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xa0 - CONSTANT SYSVARS
30 LOAD ( 8086 asm ) 30 LOAD ( 8086 asm )
262 LOAD ( xcomp ) 270 LOAD ( xcomp overrides ) 262 LOAD ( xcomp ) 270 LOAD ( xcomp overrides )
445 461 LOADR ( 8086 boot code ) 445 461 LOADR ( 8086 boot code )

2
emul/z80/xcomp.fs
View File

@ -1,6 +1,6 @@
0xff00 CONSTANT RS_ADDR 0xff00 CONSTANT RS_ADDR
0xfffa CONSTANT PS_ADDR 0xfffa CONSTANT PS_ADDR
RS_ADDR 0x80 - CONSTANT SYSVARS RS_ADDR 0xa0 - CONSTANT SYSVARS
0 CONSTANT HERESTART 0 CONSTANT HERESTART
5 LOAD ( z80 assembler ) 5 LOAD ( z80 assembler )
262 LOAD ( xcomp ) 262 LOAD ( xcomp )