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7c20501f27
...
6a5ff3adcb
2
blk/001
2
blk/001
@ -7,7 +7,7 @@ MASTER INDEX
|
||||
200 Z80 assembler 260 Cross compilation
|
||||
280 Z80 boot code 350 ACIA driver
|
||||
370 SD Card driver 390 Cross-compiled core
|
||||
439 Core words 480 AT28 Driver
|
||||
428 Core words 480 AT28 Driver
|
||||
490 TRS-80 Recipe 520 Fonts
|
||||
550 TI-84+ Recipe
|
||||
|
||||
|
6
blk/131
6
blk/131
@ -1,9 +1,9 @@
|
||||
( Relink a regular Forth full interpreter. )
|
||||
: RLCORE
|
||||
LIT< [ (find) DROP ( target )
|
||||
LIT< H@ (find) DROP ( target )
|
||||
DUP 3 - @ ( t prevoff )
|
||||
( subtract [ name length )
|
||||
1- ( t o )
|
||||
( subtract H@ name length )
|
||||
2- ( t o )
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||||
RLDICT
|
||||
;
|
||||
|
||||
|
2
blk/393
2
blk/393
@ -12,4 +12,4 @@
|
||||
0 0x08 RAM+ ! ( 08 == C<* override )
|
||||
LIT< INTERPRET (find) DROP EXECUTE
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||||
;
|
||||
1 25 LOADR+ ( xcomp core low )
|
||||
1 19 LOADR+
|
||||
|
13
blk/409
13
blk/409
@ -4,13 +4,6 @@
|
||||
(find)
|
||||
NOT IF (parse) ELSE EXECUTE THEN
|
||||
C<? NOT IF LIT< (ok) (find) IF EXECUTE THEN THEN
|
||||
AGAIN ;
|
||||
XCURRENT @ _xapply ( to PSP )
|
||||
( Drop RSP until I-2 == INTERPRET. )
|
||||
: EXIT!
|
||||
[ LITN ] ( I, from PSP )
|
||||
BEGIN ( I )
|
||||
DUP ( I I )
|
||||
R> DROP I 2- @ ( I I a )
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||||
= UNTIL
|
||||
DROP ;
|
||||
AGAIN
|
||||
;
|
||||
|
||||
|
13
blk/413
13
blk/413
@ -1,13 +0,0 @@
|
||||
: '? WORD (find) ;
|
||||
: '
|
||||
'? (?br) [ 4 , ] EXIT
|
||||
LIT< (wnf) (find) DROP EXECUTE
|
||||
;
|
||||
: ROLL
|
||||
DUP NOT IF EXIT THEN
|
||||
1+ DUP PICK ( n val )
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||||
SWAP 2 * (roll) ( val )
|
||||
SWAP DROP
|
||||
;
|
||||
: 2OVER 3 PICK 3 PICK ;
|
||||
: 2SWAP 3 ROLL 3 ROLL ;
|
14
blk/415
14
blk/415
@ -1,13 +1 @@
|
||||
: WORD(
|
||||
DUP 1- C@ ( name len field )
|
||||
127 AND ( 0x7f. remove IMMEDIATE flag )
|
||||
3 + ( fixed header len )
|
||||
-
|
||||
;
|
||||
: FORGET
|
||||
' DUP ( w w )
|
||||
( HERE must be at the end of prev's word, that is, at the
|
||||
beginning of w. )
|
||||
WORD( HERE ! ( w )
|
||||
PREV CURRENT !
|
||||
;
|
||||
1 4 LOADR+
|
||||
|
23
blk/416
23
blk/416
@ -1,13 +1,14 @@
|
||||
: BLKMEM+ 0x59 RAM+ @ + ;
|
||||
( n -- Fetches block n and write it to BLK( )
|
||||
: BLK@* 0 BLKMEM+ ;
|
||||
( n -- Write back BLK( to storage at block n )
|
||||
: BLK!* 2 BLKMEM+ ;
|
||||
( Current blk pointer in ( )
|
||||
: BLK> 4 BLKMEM+ ;
|
||||
( Whether buffer is dirty )
|
||||
: BLKDTY 6 BLKMEM+ ;
|
||||
: BLK( 8 BLKMEM+ ;
|
||||
: BLK) BLK( 1024 + ;
|
||||
: EMIT
|
||||
( 0x53==(emit) override )
|
||||
0x53 RAM+ @ DUP IF EXECUTE ELSE DROP (emit) THEN ;
|
||||
|
||||
: (print)
|
||||
BEGIN
|
||||
C@+ ( a+1 c )
|
||||
( exit if null or 0xd )
|
||||
DUP 0xd = OVER NOT OR IF 2DROP EXIT THEN
|
||||
EMIT ( a )
|
||||
AGAIN
|
||||
;
|
||||
|
||||
|
||||
|
21
blk/417
21
blk/417
@ -1,12 +1,13 @@
|
||||
: BLK$
|
||||
H@ 0x59 RAM+ !
|
||||
( 1024 for the block, 8 for variables )
|
||||
1032 ALLOT
|
||||
( LOAD detects end of block with ASCII EOT. This is why
|
||||
we write it there. EOT == 0x04 )
|
||||
4 C,
|
||||
0 BLKDTY !
|
||||
-1 BLK> !
|
||||
;
|
||||
: ,"
|
||||
BEGIN
|
||||
C<
|
||||
( 34 is ASCII for " )
|
||||
DUP 34 = IF DROP EXIT THEN C,
|
||||
AGAIN ;
|
||||
|
||||
: ."
|
||||
34 , ( 34 == litWord ) ," 0 C,
|
||||
COMPILE (print)
|
||||
; IMMEDIATE
|
||||
|
||||
: ABORT" [COMPILE] ." COMPILE ABORT ; IMMEDIATE
|
||||
|
23
blk/418
23
blk/418
@ -1,13 +1,14 @@
|
||||
: BLK! ( -- )
|
||||
BLK> @ BLK!* @ EXECUTE
|
||||
0 BLKDTY !
|
||||
;
|
||||
: FLUSH BLKDTY @ IF BLK! THEN ;
|
||||
: BLK@ ( n -- )
|
||||
FLUSH
|
||||
DUP BLK> @ = IF DROP EXIT THEN
|
||||
DUP BLK> ! BLK@* @ EXECUTE
|
||||
;
|
||||
( LITN has to be defined after the last immediate usage of
|
||||
it to avoid bootstrapping issues )
|
||||
: LITN 32 , , ( 32 == NUMBER ) ;
|
||||
|
||||
: BLK!! 1 BLKDTY ! ;
|
||||
: IMMED? 1- C@ 0x80 AND ;
|
||||
|
||||
( ';' can't have its name right away because, when created, it
|
||||
is not an IMMEDIATE yet and will not be treated properly by
|
||||
xcomp. )
|
||||
: _
|
||||
['] EXIT ,
|
||||
R> DROP ( exit : )
|
||||
; IMMEDIATE
|
||||
|
||||
|
16
blk/419
Normal file
16
blk/419
Normal file
@ -0,0 +1,16 @@
|
||||
XCURRENT @ ( to PSP )
|
||||
: :
|
||||
(entry)
|
||||
( We cannot use LITN as IMMEDIATE because of bootstrapping
|
||||
issues. Same thing for ",".
|
||||
32 == NUMBER 14 == compiledWord )
|
||||
[ 32 H@ ! 2 ALLOT 14 H@ ! 2 ALLOT ] C,
|
||||
BEGIN
|
||||
WORD
|
||||
(find)
|
||||
( is word )
|
||||
IF DUP IMMED? IF EXECUTE ELSE , THEN
|
||||
( maybe number )
|
||||
ELSE (parse) LITN THEN
|
||||
AGAIN ;
|
||||
( from PSP ) ';' SWAP 4 - C!
|
14
blk/421
14
blk/421
@ -1,14 +0,0 @@
|
||||
: EMIT
|
||||
( 0x53==(emit) override )
|
||||
0x53 RAM+ @ DUP IF EXECUTE ELSE DROP (emit) THEN ;
|
||||
|
||||
: (print)
|
||||
BEGIN
|
||||
C@+ ( a+1 c )
|
||||
( exit if null or 0xd )
|
||||
DUP 0xd = OVER NOT OR IF 2DROP EXIT THEN
|
||||
EMIT ( a )
|
||||
AGAIN
|
||||
;
|
||||
|
||||
|
15
blk/422
15
blk/422
@ -1,15 +0,0 @@
|
||||
: ,"
|
||||
BEGIN
|
||||
C<
|
||||
( 34 is ASCII for " )
|
||||
DUP 34 = IF DROP EXIT THEN C,
|
||||
AGAIN ;
|
||||
|
||||
: ."
|
||||
34 , ( 34 == litWord ) ," 0 C,
|
||||
COMPILE (print)
|
||||
; IMMEDIATE
|
||||
: ABORT" [COMPILE] ." COMPILE ABORT ; IMMEDIATE
|
||||
: BS 8 EMIT ; : LF 10 EMIT ; : CR 13 EMIT ;
|
||||
: CRLF CR LF ; : SPC 32 EMIT ;
|
||||
: NL 0x0a RAM+ @ ( NLPTR ) DUP IF EXECUTE ELSE DROP CRLF THEN ;
|
16
blk/423
16
blk/423
@ -1,16 +0,0 @@
|
||||
: _
|
||||
999 SWAP ( stop indicator )
|
||||
DUP 0 = IF '0' EXIT THEN ( 0 is a special case )
|
||||
BEGIN
|
||||
DUP 0 = IF DROP EXIT THEN
|
||||
10 /MOD ( r q )
|
||||
SWAP '0' + SWAP ( d q )
|
||||
AGAIN ;
|
||||
: . ( n -- )
|
||||
( handle negative )
|
||||
DUP 0< IF '-' EMIT -1 * THEN
|
||||
_
|
||||
BEGIN
|
||||
DUP '9' > IF DROP EXIT THEN ( stop indicator )
|
||||
EMIT
|
||||
AGAIN ;
|
16
blk/424
16
blk/424
@ -1,16 +0,0 @@
|
||||
: ? @ . ;
|
||||
: _
|
||||
DUP 9 > IF 10 - 'a' +
|
||||
ELSE '0' + THEN
|
||||
;
|
||||
( For hex display, there are no negatives )
|
||||
: .x
|
||||
256 MOD ( ensure < 0x100 )
|
||||
16 /MOD ( l h )
|
||||
_ EMIT ( l )
|
||||
_ EMIT
|
||||
;
|
||||
: .X
|
||||
256 /MOD ( l h )
|
||||
.x .x
|
||||
;
|
13
blk/425
13
blk/425
@ -1,13 +0,0 @@
|
||||
: _ ( a -- a+8 )
|
||||
DUP ( a a )
|
||||
':' EMIT DUP .x SPC
|
||||
4 0 DO DUP @ 256 /MOD SWAP .x .x SPC 2+ LOOP
|
||||
DROP ( a )
|
||||
8 0 DO
|
||||
C@+ DUP 0x20 0x7e =><= NOT IF DROP '.' THEN EMIT
|
||||
LOOP NL ;
|
||||
: DUMP ( n a -- )
|
||||
LF
|
||||
SWAP 8 /MOD SWAP IF 1+ THEN
|
||||
0 DO _ LOOP
|
||||
;
|
28
blk/428
28
blk/428
@ -1,16 +1,12 @@
|
||||
: (rdlnc) ( -- f )
|
||||
( buffer overflow? same as if we typed a newline )
|
||||
IN> @ IN) = IF 0x0a ELSE KEY THEN ( c )
|
||||
DUP 0x7f = IF DROP 0x8 THEN ( del? same as backspace )
|
||||
DUP 0x0a = IF DROP 0xd THEN ( lf? same as cr )
|
||||
( echo back )
|
||||
DUP EMIT ( c )
|
||||
( bacspace? handle and exit )
|
||||
DUP 0x8 = IF (inbs) EXIT THEN
|
||||
( write and advance )
|
||||
DUP ( keep as result ) ( c c )
|
||||
( We take advantage of the fact that c's MSB is always zero and
|
||||
thus ! automatically null-terminates our string )
|
||||
IN> @ ! 1 IN> +! ( c )
|
||||
( if newline, replace with zero to indicate EOL )
|
||||
DUP 0xd = IF DROP 0 THEN ;
|
||||
Core words
|
||||
|
||||
These words follow cross-compiled words, but unlike them, these
|
||||
are self-bootstrapping and don't depend on the Cross Compiler.
|
||||
They will typically be included in source form right after a
|
||||
stage1 binary which will interpret it on boot and bootstrap
|
||||
itself to a full intepreter, which can then be relinked with
|
||||
the Relinker. There is no loader for these libraries because
|
||||
you will typically XPACK (B267) them.
|
||||
|
||||
430 core 442 fmt
|
||||
447 readln 453 blk
|
||||
|
25
blk/430
25
blk/430
@ -1,12 +1,15 @@
|
||||
( Initializes the readln subsystem )
|
||||
: RDLN$
|
||||
( 57 == rdln's memory )
|
||||
H@ 0x57 RAM+ !
|
||||
( plus 2 for extra bytes after buffer: 1 for
|
||||
the last typed 0x0a and one for the following NULL. )
|
||||
IN) IN> - 2+ ALLOT
|
||||
(infl)
|
||||
LIT< RDLN< (find) DROP 0x0c RAM+ !
|
||||
1 0x06 RAM+ ! ( 06 == C<? )
|
||||
: [ INTERPRET ; IMMEDIATE
|
||||
: ] R> DROP ;
|
||||
: LIT< WORD 34 , SCPY 0 C, ; IMMEDIATE
|
||||
: LITA 36 , , ;
|
||||
: '? WORD (find) ;
|
||||
: '
|
||||
'? (?br) [ 4 , ] EXIT
|
||||
LIT< (wnf) (find) DROP EXECUTE
|
||||
;
|
||||
|
||||
: ['] ' LITA ; IMMEDIATE
|
||||
: COMPILE ' LITA ['] , , ; IMMEDIATE
|
||||
: [COMPILE] ' , ; IMMEDIATE
|
||||
: BEGIN H@ ; IMMEDIATE
|
||||
: AGAIN COMPILE (br) H@ - , ; IMMEDIATE
|
||||
: UNTIL COMPILE (?br) H@ - , ; IMMEDIATE
|
||||
|
24
blk/431
24
blk/431
@ -1,13 +1,13 @@
|
||||
: .2 DUP 10 < IF SPC THEN . ;
|
||||
: EOL? ( c -- f ) DUP 0xd = SWAP NOT OR ;
|
||||
: LIST
|
||||
BLK@
|
||||
16 0 DO
|
||||
I 1+ .2 SPC
|
||||
64 I * BLK( + DUP 64 + SWAP DO
|
||||
I C@ DUP EOL? IF DROP LEAVE ELSE EMIT THEN
|
||||
LOOP
|
||||
NL
|
||||
LOOP
|
||||
;
|
||||
: _ BEGIN LIT< ) WORD S= UNTIL ; IMMEDIATE
|
||||
40 CURRENT @ 4 - C!
|
||||
( Hello, hello, krkrkrkr... do you hear me?
|
||||
Ah, voice at last! Some lines above need comments
|
||||
BTW: Forth lines limited to 64 cols because of default
|
||||
input buffer size in Collapse OS
|
||||
|
||||
40 is ASCII for '('. We do this to simplify XPACK's task of
|
||||
not mistakenly consider '(' definition as a comment.
|
||||
LIT<: 34 == litWord
|
||||
LITA: 36 == addrWord
|
||||
COMPILE: Tough one. Get addr of caller word (example above
|
||||
(br)) and then call LITA on it. )
|
||||
|
27
blk/432
27
blk/432
@ -1,16 +1,11 @@
|
||||
: _
|
||||
(boot<)
|
||||
DUP 4 = IF
|
||||
( We drop our char, but also "a" from WORD: it won't
|
||||
have the opportunity to balance PSP because we're
|
||||
EXIT!ing. )
|
||||
2DROP
|
||||
( We're finished interpreting )
|
||||
EXIT!
|
||||
THEN
|
||||
;
|
||||
XCURRENT @ _xapply ( to PSP, for LOAD )
|
||||
( pre-comment for tight LOAD: The 0x08==I check after INTERPRET
|
||||
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
|
||||
to avoid tons of "ok" displays. )
|
||||
: IF ( -- a | a: br cell addr )
|
||||
COMPILE (?br)
|
||||
H@ ( push a )
|
||||
2 ALLOT ( br cell allot )
|
||||
; IMMEDIATE
|
||||
|
||||
: THEN ( a -- | a: br cell addr )
|
||||
DUP H@ -^ SWAP ( a-H a )
|
||||
!
|
||||
; IMMEDIATE
|
||||
|
||||
|
28
blk/433
28
blk/433
@ -1,16 +1,12 @@
|
||||
: LOAD
|
||||
BLK> @ >R ( save restorable variables to RSP )
|
||||
0x08 RAM+ @ >R ( 08 == C<* override )
|
||||
0x06 RAM+ @ >R ( C<? )
|
||||
0x2e RAM+ @ >R ( boot ptr )
|
||||
BLK@
|
||||
BLK( 0x2e RAM+ ! ( Point to beginning of BLK )
|
||||
[ LITN ( from PSP, B432 ) ] 0x08 RAM+ !
|
||||
1 0x06 RAM+ ! ( 06 == C<? )
|
||||
INTERPRET
|
||||
R> 0x2e RAM+ ! R> 0x06 RAM+ !
|
||||
I 0x08 RAM+ @ = IF ( nested load )
|
||||
R> DROP ( C<* ) R> BLK@
|
||||
ELSE ( not nested )
|
||||
R> 0x08 RAM+ ! R> DROP ( BLK> )
|
||||
THEN ;
|
||||
: ELSE ( a1 -- a2 | a1: IF cell a2: ELSE cell )
|
||||
COMPILE (br)
|
||||
2 ALLOT
|
||||
DUP H@ -^ SWAP ( a-H a )
|
||||
!
|
||||
H@ 2- ( push a. -2 for allot offset )
|
||||
; IMMEDIATE
|
||||
|
||||
: [IF]
|
||||
IF EXIT THEN
|
||||
LIT< [THEN] BEGIN DUP WORD S= UNTIL DROP ;
|
||||
: [THEN] ;
|
||||
|
18
blk/434
18
blk/434
@ -1,4 +1,14 @@
|
||||
: LOAD+ BLK> @ + LOAD ;
|
||||
( b1 b2 -- )
|
||||
: LOADR 1+ SWAP DO I DUP . NL LOAD LOOP ;
|
||||
: LOADR+ BLK> @ + SWAP BLK> @ + SWAP LOADR ;
|
||||
: DOES>
|
||||
( Overwrite cellWord in CURRENT )
|
||||
( 43 == doesWord )
|
||||
43 CURRENT @ C!
|
||||
( When we have a DOES>, we forcefully place HERE to 4
|
||||
bytes after CURRENT. This allows a DOES word to use ","
|
||||
and "C," without messing everything up. )
|
||||
CURRENT @ 3 + HERE !
|
||||
( HERE points to where we should write R> )
|
||||
R> ,
|
||||
( We're done. Because we've popped RS, we'll exit parent
|
||||
definition )
|
||||
;
|
||||
|
||||
|
20
blk/435
20
blk/435
@ -1,14 +1,8 @@
|
||||
( LITN has to be defined after the last immediate usage of
|
||||
it to avoid bootstrapping issues )
|
||||
: LITN 32 , , ( 32 == NUMBER ) ;
|
||||
|
||||
: IMMED? 1- C@ 0x80 AND ;
|
||||
|
||||
( ';' can't have its name right away because, when created, it
|
||||
is not an IMMEDIATE yet and will not be treated properly by
|
||||
xcomp. )
|
||||
: _
|
||||
['] EXIT ,
|
||||
R> DROP ( exit : )
|
||||
; IMMEDIATE
|
||||
: VARIABLE CREATE 2 ALLOT ;
|
||||
: CONSTANT CREATE , DOES> @ ;
|
||||
|
||||
( In addition to pushing H@ this compiles 2>R so that loop
|
||||
variables are sent to PS at runtime )
|
||||
: DO COMPILE 2>R H@ ; IMMEDIATE
|
||||
: LOOP COMPILE (loop) H@ - , ; IMMEDIATE
|
||||
( LEAVE is implemented in xcomp )
|
||||
|
27
blk/436
27
blk/436
@ -1,16 +1,11 @@
|
||||
XCURRENT @ ( to PSP )
|
||||
: :
|
||||
(entry)
|
||||
( We cannot use LITN as IMMEDIATE because of bootstrapping
|
||||
issues. Same thing for ",".
|
||||
32 == NUMBER 14 == compiledWord )
|
||||
[ 32 H@ ! 2 ALLOT 14 H@ ! 2 ALLOT ] C,
|
||||
BEGIN
|
||||
WORD
|
||||
(find)
|
||||
( is word )
|
||||
IF DUP IMMED? IF EXECUTE ELSE , THEN
|
||||
( maybe number )
|
||||
ELSE (parse) LITN THEN
|
||||
AGAIN ;
|
||||
( from PSP ) ';' SWAP 4 - C!
|
||||
: ROLL
|
||||
DUP NOT IF EXIT THEN
|
||||
1+ DUP PICK ( n val )
|
||||
SWAP 2 * (roll) ( val )
|
||||
SWAP DROP
|
||||
;
|
||||
|
||||
: 2OVER 3 PICK 3 PICK ;
|
||||
: 2SWAP 3 ROLL 3 ROLL ;
|
||||
|
||||
|
||||
|
13
blk/438
Normal file
13
blk/438
Normal file
@ -0,0 +1,13 @@
|
||||
: WORD(
|
||||
DUP 1- C@ ( name len field )
|
||||
127 AND ( 0x7f. remove IMMEDIATE flag )
|
||||
3 + ( fixed header len )
|
||||
-
|
||||
;
|
||||
: FORGET
|
||||
' DUP ( w w )
|
||||
( HERE must be at the end of prev's word, that is, at the
|
||||
beginning of w. )
|
||||
WORD( HERE ! ( w )
|
||||
PREV CURRENT !
|
||||
;
|
20
blk/439
20
blk/439
@ -1,12 +1,10 @@
|
||||
Core words
|
||||
( Drop RSP until I-2 == INTERPRET. )
|
||||
: EXIT!
|
||||
['] INTERPRET ( I )
|
||||
BEGIN ( I )
|
||||
DUP ( I I )
|
||||
R> DROP I 2- @ ( I I a )
|
||||
= UNTIL
|
||||
DROP
|
||||
;
|
||||
|
||||
These words follow cross-compiled words, but unlike them, these
|
||||
are self-bootstrapping and don't depend on the Cross Compiler.
|
||||
They will typically be included in source form right after a
|
||||
stage1 binary which will interpret it on boot and bootstrap
|
||||
itself to a full intepreter, which can then be relinked with
|
||||
the Relinker. There is no loader for these libraries because
|
||||
you will typically XPACK (B267) them.
|
||||
|
||||
440 core 447 readln
|
||||
453 blk
|
||||
|
21
blk/440
21
blk/440
@ -1,10 +1,11 @@
|
||||
: [ INTERPRET ; IMMEDIATE
|
||||
: ] R> DROP ;
|
||||
: LIT< WORD 34 , SCPY 0 C, ; IMMEDIATE
|
||||
: LITA 36 , , ;
|
||||
: ['] ' LITA ; IMMEDIATE
|
||||
: COMPILE ' LITA ['] , , ; IMMEDIATE
|
||||
: [COMPILE] ' , ; IMMEDIATE
|
||||
: BEGIN H@ ; IMMEDIATE
|
||||
: AGAIN COMPILE (br) H@ - , ; IMMEDIATE
|
||||
: UNTIL COMPILE (?br) H@ - , ; IMMEDIATE
|
||||
: (uflw) ABORT" stack underflow" ;
|
||||
: BS 8 EMIT ;
|
||||
: LF 10 EMIT ;
|
||||
: CR 13 EMIT ;
|
||||
: CRLF CR LF ;
|
||||
: SPC 32 EMIT ;
|
||||
: NL 0x0a RAM+ @ ( NLPTR ) DUP IF EXECUTE ELSE DROP CRLF THEN ;
|
||||
|
||||
: (wnf) (print) SPC ABORT" word not found" ;
|
||||
: (ok) SPC ." ok" NL ;
|
||||
|
||||
|
13
blk/441
13
blk/441
@ -1,13 +0,0 @@
|
||||
: _ BEGIN LIT< ) WORD S= UNTIL ; IMMEDIATE
|
||||
40 CURRENT @ 4 - C!
|
||||
( Hello, hello, krkrkrkr... do you hear me?
|
||||
Ah, voice at last! Some lines above need comments
|
||||
BTW: Forth lines limited to 64 cols because of default
|
||||
input buffer size in Collapse OS
|
||||
|
||||
40 is ASCII for '('. We do this to simplify XPACK's task of
|
||||
not mistakenly consider '(' definition as a comment.
|
||||
LIT<: 34 == litWord
|
||||
LITA: 36 == addrWord
|
||||
COMPILE: Tough one. Get addr of caller word (example above
|
||||
(br)) and then call LITA on it. )
|
27
blk/442
27
blk/442
@ -1,11 +1,16 @@
|
||||
: IF ( -- a | a: br cell addr )
|
||||
COMPILE (?br)
|
||||
H@ ( push a )
|
||||
2 ALLOT ( br cell allot )
|
||||
; IMMEDIATE
|
||||
|
||||
: THEN ( a -- | a: br cell addr )
|
||||
DUP H@ -^ SWAP ( a-H a )
|
||||
!
|
||||
; IMMEDIATE
|
||||
|
||||
: _
|
||||
999 SWAP ( stop indicator )
|
||||
DUP 0 = IF '0' EXIT THEN ( 0 is a special case )
|
||||
BEGIN
|
||||
DUP 0 = IF DROP EXIT THEN
|
||||
10 /MOD ( r q )
|
||||
SWAP '0' + SWAP ( d q )
|
||||
AGAIN ;
|
||||
: . ( n -- )
|
||||
( handle negative )
|
||||
DUP 0< IF '-' EMIT -1 * THEN
|
||||
_
|
||||
BEGIN
|
||||
DUP '9' > IF DROP EXIT THEN ( stop indicator )
|
||||
EMIT
|
||||
AGAIN ;
|
||||
|
28
blk/443
28
blk/443
@ -1,12 +1,16 @@
|
||||
: ELSE ( a1 -- a2 | a1: IF cell a2: ELSE cell )
|
||||
COMPILE (br)
|
||||
2 ALLOT
|
||||
DUP H@ -^ SWAP ( a-H a )
|
||||
!
|
||||
H@ 2- ( push a. -2 for allot offset )
|
||||
; IMMEDIATE
|
||||
|
||||
: [IF]
|
||||
IF EXIT THEN
|
||||
LIT< [THEN] BEGIN DUP WORD S= UNTIL DROP ;
|
||||
: [THEN] ;
|
||||
: ? @ . ;
|
||||
: _
|
||||
DUP 9 > IF 10 - 'a' +
|
||||
ELSE '0' + THEN
|
||||
;
|
||||
( For hex display, there are no negatives )
|
||||
: .x
|
||||
256 MOD ( ensure < 0x100 )
|
||||
16 /MOD ( l h )
|
||||
_ EMIT ( l )
|
||||
_ EMIT
|
||||
;
|
||||
: .X
|
||||
256 /MOD ( l h )
|
||||
.x .x
|
||||
;
|
||||
|
28
blk/444
28
blk/444
@ -1,14 +1,16 @@
|
||||
: DOES>
|
||||
( Overwrite cellWord in CURRENT )
|
||||
( 43 == doesWord )
|
||||
43 CURRENT @ C!
|
||||
( When we have a DOES>, we forcefully place HERE to 4
|
||||
bytes after CURRENT. This allows a DOES word to use ","
|
||||
and "C," without messing everything up. )
|
||||
CURRENT @ 3 + HERE !
|
||||
( HERE points to where we should write R> )
|
||||
R> ,
|
||||
( We're done. Because we've popped RS, we'll exit parent
|
||||
definition )
|
||||
: _ ( a -- a+8 )
|
||||
DUP ( save for 2nd loop )
|
||||
':' EMIT DUP .x SPC
|
||||
4 0 DO
|
||||
DUP @ 256 /MOD SWAP
|
||||
.x .x SPC 2+
|
||||
LOOP
|
||||
DROP
|
||||
8 0 DO
|
||||
C@+
|
||||
DUP 0x20 0x7e =><= NOT
|
||||
IF DROP '.' THEN
|
||||
EMIT
|
||||
LOOP
|
||||
NL
|
||||
;
|
||||
|
||||
|
12
blk/445
12
blk/445
@ -1,8 +1,6 @@
|
||||
: VARIABLE CREATE 2 ALLOT ;
|
||||
: CONSTANT CREATE , DOES> @ ;
|
||||
: DUMP ( n a -- )
|
||||
LF
|
||||
SWAP 8 /MOD SWAP IF 1+ THEN
|
||||
0 DO _ LOOP
|
||||
;
|
||||
|
||||
( In addition to pushing H@ this compiles 2>R so that loop
|
||||
variables are sent to PS at runtime )
|
||||
: DO COMPILE 2>R H@ ; IMMEDIATE
|
||||
: LOOP COMPILE (loop) H@ - , ; IMMEDIATE
|
||||
( LEAVE is implemented in xcomp )
|
||||
|
3
blk/446
3
blk/446
@ -1,3 +0,0 @@
|
||||
: (ok) SPC ." ok" NL ;
|
||||
: (uflw) ABORT" stack underflow" ;
|
||||
: (wnf) (print) SPC ABORT" word not found" ;
|
@ -1,10 +1,11 @@
|
||||
64 CONSTANT INBUFSZ
|
||||
: RDLNMEM+ 0x57 RAM+ @ + ;
|
||||
( current position in INBUF )
|
||||
: IN> 0 RDLNMEM+ ;
|
||||
( points to INBUF )
|
||||
: IN( 2 RDLNMEM+ ;
|
||||
( points to INBUF's end )
|
||||
: IN) 0x40 ( buffer size ) 2+ RDLNMEM+ ;
|
||||
: IN) INBUFSZ 2+ RDLNMEM+ ;
|
||||
|
||||
( flush input buffer )
|
||||
( set IN> to IN( and set IN> @ to null )
|
16
blk/449
Normal file
16
blk/449
Normal file
@ -0,0 +1,16 @@
|
||||
: (rdlnc) ( -- f )
|
||||
( buffer overflow? same as if we typed a newline )
|
||||
IN> @ IN) = IF 0x0a ELSE KEY THEN ( c )
|
||||
DUP 0x7f = IF DROP 0x8 THEN ( del? same as backspace )
|
||||
DUP 0x0a = IF DROP 0xd THEN ( lf? same as cr )
|
||||
( echo back )
|
||||
DUP EMIT ( c )
|
||||
( bacspace? handle and exit )
|
||||
DUP 0x8 = IF (inbs) EXIT THEN
|
||||
( write and advance )
|
||||
DUP ( keep as result ) ( c c )
|
||||
( We take advantage of the fact that c's MSB is always zero and
|
||||
thus ! automatically null-terminates our string )
|
||||
IN> @ ! 1 IN> +! ( c )
|
||||
( if newline, replace with zero to indicate EOL )
|
||||
DUP 0xd = IF DROP 0 THEN ;
|
12
blk/451
Normal file
12
blk/451
Normal file
@ -0,0 +1,12 @@
|
||||
( Initializes the readln subsystem )
|
||||
: RDLN$
|
||||
( 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
|
||||
(infl)
|
||||
['] RDLN< 0x0c RAM+ !
|
||||
1 0x06 RAM+ ! ( 06 == C<? )
|
||||
;
|
||||
|
13
blk/453
Normal file
13
blk/453
Normal file
@ -0,0 +1,13 @@
|
||||
: BLKMEM+ 0x59 RAM+ @ + ;
|
||||
( n -- Fetches block n and write it to BLK( )
|
||||
: BLK@* 0 BLKMEM+ ;
|
||||
( n -- Write back BLK( to storage at block n )
|
||||
: BLK!* 2 BLKMEM+ ;
|
||||
( Current blk pointer in ( )
|
||||
: BLK> 4 BLKMEM+ ;
|
||||
( Whether buffer is dirty )
|
||||
: BLKDTY 6 BLKMEM+ ;
|
||||
: BLK( 8 BLKMEM+ ;
|
||||
: BLK) BLK( 1024 + ;
|
||||
|
||||
|
12
blk/454
Normal file
12
blk/454
Normal file
@ -0,0 +1,12 @@
|
||||
: BLK$
|
||||
H@ 0x59 RAM+ !
|
||||
( 1024 for the block, 8 for variables )
|
||||
1032 ALLOT
|
||||
( LOAD detects end of block with ASCII EOT. This is why
|
||||
we write it there. EOT == 0x04 )
|
||||
4 C,
|
||||
0 BLKDTY !
|
||||
-1 BLK> !
|
||||
;
|
||||
|
||||
|
13
blk/455
Normal file
13
blk/455
Normal file
@ -0,0 +1,13 @@
|
||||
: BLK! ( -- )
|
||||
BLK> @ BLK!* @ EXECUTE
|
||||
0 BLKDTY !
|
||||
;
|
||||
: FLUSH BLKDTY @ IF BLK! THEN ;
|
||||
: BLK@ ( n -- )
|
||||
FLUSH
|
||||
DUP BLK> @ = IF DROP EXIT THEN
|
||||
DUP BLK> ! BLK@* @ EXECUTE
|
||||
;
|
||||
|
||||
: BLK!! 1 BLKDTY ! ;
|
||||
|
13
blk/456
Normal file
13
blk/456
Normal file
@ -0,0 +1,13 @@
|
||||
: .2 DUP 10 < IF SPC THEN . ;
|
||||
: EOL? ( c -- f ) DUP 0xd = SWAP NOT OR ;
|
||||
: LIST
|
||||
BLK@
|
||||
16 0 DO
|
||||
I 1+ .2 SPC
|
||||
64 I * BLK( + DUP 64 + SWAP DO
|
||||
I C@ DUP EOL? IF DROP LEAVE ELSE EMIT THEN
|
||||
LOOP
|
||||
NL
|
||||
LOOP
|
||||
;
|
||||
|
16
blk/457
Normal file
16
blk/457
Normal file
@ -0,0 +1,16 @@
|
||||
: _
|
||||
(boot<)
|
||||
DUP 4 = IF
|
||||
( We drop our char, but also "a" from WORD: it won't
|
||||
have the opportunity to balance PSP because we're
|
||||
EXIT!ing. )
|
||||
2DROP
|
||||
( We're finished interpreting )
|
||||
EXIT!
|
||||
THEN
|
||||
;
|
||||
|
||||
( pre-comment for tight LOAD: The 0x08==I check after INTERPRET
|
||||
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
|
||||
to avoid tons of "ok" displays. )
|
16
blk/458
Normal file
16
blk/458
Normal file
@ -0,0 +1,16 @@
|
||||
: LOAD
|
||||
BLK> @ >R ( save restorable variables to RSP )
|
||||
0x08 RAM+ @ >R
|
||||
0x06 RAM+ @ >R ( C<? )
|
||||
0x2e RAM+ @ >R ( boot ptr )
|
||||
BLK@
|
||||
BLK( 0x2e RAM+ ! ( Point to beginning of BLK )
|
||||
['] _ 0x08 RAM+ ! ( 08 == C<* override )
|
||||
1 0x06 RAM+ ! ( 06 == C<? )
|
||||
INTERPRET
|
||||
R> 0x2e RAM+ ! R> 0x06 RAM+ !
|
||||
I 0x08 RAM+ @ = IF ( nested load )
|
||||
R> DROP ( C<* ) R> BLK@
|
||||
ELSE ( not nested )
|
||||
R> 0x08 RAM+ ! R> DROP ( BLK> )
|
||||
THEN ;
|
4
blk/459
Normal file
4
blk/459
Normal file
@ -0,0 +1,4 @@
|
||||
: LOAD+ BLK> @ + LOAD ;
|
||||
( b1 b2 -- )
|
||||
: LOADR 1+ SWAP DO I DUP . NL LOAD LOOP ;
|
||||
: LOADR+ BLK> @ + SWAP BLK> @ + SWAP LOADR ;
|
BIN
emul/forth.bin
BIN
emul/forth.bin
Binary file not shown.
@ -13,15 +13,15 @@
|
||||
CURRENT @ XCURRENT !
|
||||
|
||||
282 LOAD ( boot.z80 )
|
||||
393 LOAD ( xcomp core low )
|
||||
393 LOAD ( icore low )
|
||||
: (emit) 0 PC! ;
|
||||
: (key) 0 PC@ ;
|
||||
420 LOAD ( xcomp core high )
|
||||
415 LOAD ( icore high )
|
||||
(entry) _
|
||||
( Update LATEST )
|
||||
PC ORG @ 8 + !
|
||||
," CURRENT @ HERE ! "
|
||||
440 446 XPACKR
|
||||
430 459 XPACKR
|
||||
," ' (key) 12 RAM+ ! "
|
||||
ORG @ 256 /MOD 2 PC! 2 PC!
|
||||
H@ 256 /MOD 2 PC! 2 PC!
|
||||
|
@ -19,6 +19,7 @@ design.
|
||||
## Gathering parts
|
||||
|
||||
* A RC2014 Classic
|
||||
* `stage2.bin` from the base recipe
|
||||
* A MicroSD breakout board. I use Adafruit's.
|
||||
* A proto board + header pins with 39 positions so we can make a RC2014 card.
|
||||
* Diodes, resistors and stuff
|
||||
@ -68,30 +69,12 @@ matter. However, it *does* matter for the `SELECT` line, so I don't follow my
|
||||
own schematic with regards to the `M1` and `A2` lines and use two inverters
|
||||
instead.
|
||||
|
||||
## Building your binary
|
||||
## Building your stage 3
|
||||
|
||||
Your Collapse OS binary needs the SDC drivers which need to be inserted during
|
||||
Cross Compilation, which needs you need to recompile it from stage 1. First,
|
||||
look at B370. You'll see that it indicates a block range for the driver. That
|
||||
needs to be loaded.
|
||||
|
||||
Open xcomp.fs from base recipe and locate acia loading. You'll insert a line
|
||||
right after that that will look like:
|
||||
|
||||
372 387 LOADR ( sdc )
|
||||
|
||||
Normally, that's all you need to do. However, you have a little problem: You're
|
||||
busting the 8K ROM limit. But it's ok, you can remove the linker's XPACKing
|
||||
line: because you'll have access to the blkfs from SD card, you can load it
|
||||
from there!
|
||||
|
||||
Removing the linker from XPACKing will free enough space for your binary to fit
|
||||
in 8K. You also have to add `BLK$` to initialization routine.
|
||||
|
||||
Build it and write it to EEPROM.
|
||||
|
||||
If you want, once you're all set with the SD card, you can relink core words
|
||||
like you did in the base recipe for optimal resource usage.
|
||||
Using the same technique as you used in the `eeprom` recipe, you can append
|
||||
required words to your boot binary. There's only one required unit: `blk` from
|
||||
core words (B453). The SD card driver was already included in the base recipe
|
||||
to save you the troubles of rebuilding from stage 1 for this recipe.
|
||||
|
||||
## Testing in the emulator
|
||||
|
||||
|
@ -20,13 +20,14 @@ RAMSTART 0x70 + CONSTANT ACIA_MEM
|
||||
CURRENT @ XCURRENT !
|
||||
|
||||
282 LOAD ( boot.z80 )
|
||||
393 LOAD ( xcomp core low )
|
||||
393 LOAD ( icore low )
|
||||
352 LOAD ( acia )
|
||||
420 LOAD ( xcomp core high )
|
||||
372 381 LOADR ( sdc )
|
||||
415 LOAD ( icore high )
|
||||
(entry) _
|
||||
( Update LATEST )
|
||||
PC ORG @ 8 + !
|
||||
440 446 XPACKR ( core )
|
||||
430 452 XPACKR ( core fmt readln )
|
||||
123 132 XPACKR ( linker )
|
||||
," : _ ACIA$ RDLN$ (ok) ; _ "
|
||||
ORG @ 256 /MOD 2 PC! 2 PC!
|
||||
|
@ -66,15 +66,15 @@ CURRENT @ XCURRENT !
|
||||
|
||||
0x100 BIN( !
|
||||
282 LOAD ( boot.z80 )
|
||||
393 LOAD ( xcomp core low )
|
||||
393 LOAD ( icore low )
|
||||
CREATE ~FNT CPFNT3x5
|
||||
555 560 LOADR ( LCD low )
|
||||
566 570 LOADR ( KBD low )
|
||||
420 LOAD ( xcomp core high )
|
||||
415 LOAD ( icore high )
|
||||
(entry) _
|
||||
( Update LATEST )
|
||||
PC ORG @ 8 + !
|
||||
440 446 XPACKR ( core )
|
||||
430 451 XPACKR ( core fmt readln )
|
||||
," : _ LCD$ KBD$ (ok) RDLN$ ; _ "
|
||||
ORG @ 0x100 - 256 /MOD 2 PC! 2 PC!
|
||||
H@ 256 /MOD 2 PC! 2 PC!
|
||||
|
@ -15,13 +15,13 @@ CURRENT @ XCURRENT !
|
||||
0x3000 BIN( !
|
||||
282 LOAD ( boot.z80 )
|
||||
492 LOAD ( trs80.z80 )
|
||||
393 LOAD ( xcomp core low )
|
||||
420 LOAD ( xcomp core high )
|
||||
393 LOAD ( icore low )
|
||||
415 LOAD ( icore high )
|
||||
(entry) _
|
||||
( Update LATEST )
|
||||
PC ORG @ 8 + !
|
||||
," CURRENT @ HERE ! "
|
||||
440 446 XPACKR ( core )
|
||||
430 459 XPACKR ( core readln fmt blk )
|
||||
499 500 XPACKR ( trs80.fs )
|
||||
( 0x0a == NLPTR. TRS-80 wants CR-only newlines )
|
||||
," : _ ['] CR 0x0a RAM+ ! BLK$ FD$ (ok) RDLN$ ; _ "
|
||||
|
Loading…
Reference in New Issue
Block a user