Move core's blk to xcomp core (low and high)

TODO: implement X['] so that I can remove those XCURRENT patterns.

blk/131

@@ -1,9 +1,9 @@
 ( Relink a regular Forth full interpreter. )
 : RLCORE
-    LIT< H@ (find) DROP         ( target )
+    LIT< [ (find) DROP          ( target )
     DUP 3 - @                   ( t prevoff )
-    ( subtract H@ name length )
+    ( subtract [ name length )
-    2-                          ( t o )
+    1-                          ( t o )
     RLDICT
 ;
 

blk/370

@@ -1,3 +1,3 @@
 SD Card driver
 
-Load range: 372-381
+Load range: 372-387

blk/393

@@ -12,4 +12,4 @@
     0 0x08 RAM+ !  ( 08 == C<* override )
     LIT< INTERPRET (find) DROP EXECUTE
 ;
-1 22 LOADR+
+1 25 LOADR+ ( xcomp core low )

blk/409

@@ -4,6 +4,13 @@
     (find)
     NOT IF (parse) ELSE EXECUTE THEN
     C<? NOT IF LIT< (ok) (find) IF EXECUTE THEN THEN
-    AGAIN
+    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 )
+    = UNTIL
+    DROP ;

blk/420

@@ -1 +1 @@
-1 12 LOADR+ ( xcomp core high )
+1 16 LOADR+ ( xcomp core high )

blk/431

@@ -1,14 +1,13 @@
-( LITN has to be defined after the last immediate usage of
+: .2 DUP 10 < IF SPC THEN . ;
-  it to avoid bootstrapping issues )
+: EOL? ( c -- f ) DUP 0xd = SWAP NOT OR ;
-: LITN 32 , , ( 32 == NUMBER ) ;
+: LIST
-
+    BLK@
-: IMMED? 1- C@ 0x80 AND ;
+    16 0 DO
-
+        I 1+ .2 SPC
-( ';' can't have its name right away because, when created, it
+        64 I * BLK( + DUP 64 + SWAP DO
-  is not an IMMEDIATE yet and will not be treated properly by
+            I C@ DUP EOL? IF DROP LEAVE ELSE EMIT THEN
-  xcomp. )
+        LOOP
-: _
+        NL
-    ['] EXIT ,
+    LOOP
-    R> DROP     ( exit : )
+;
-; IMMEDIATE
 

blk/432

@@ -1,16 +1,16 @@
-XCURRENT @ ( to PSP )
+: _
-: :
+    (boot<)
-    (entry)
+    DUP 4 = IF
-    ( We cannot use LITN as IMMEDIATE because of bootstrapping
+        ( We drop our char, but also "a" from WORD: it won't
-      issues. Same thing for ",".
+          have the opportunity to balance PSP because we're
-      32 == NUMBER 14 == compiledWord )
+          EXIT!ing. )
-    [ 32 H@ ! 2 ALLOT 14 H@ ! 2 ALLOT ] C,
+        2DROP
-    BEGIN
+        ( We're finished interpreting )
-        WORD
+        EXIT!
-        (find)
+    THEN
-        ( is word )
+;
-        IF DUP IMMED? IF EXECUTE ELSE , THEN
+XCURRENT @ _xapply ( to PSP, for LOAD )
-        ( maybe number )
+( pre-comment for tight LOAD: The 0x08==I check after INTERPRET
-        ELSE (parse) LITN THEN
+  is to check whether we're restoring to "_", the word above.
-    AGAIN ;
+  if yes, then we're in a nested load. Also, the 1 in 0x06 is
-( from PSP ) ';' SWAP 4 - C!
+  to avoid tons of "ok" displays. )

blk/433

@@ -1,11 +1,11 @@
 : LOAD
     BLK> @ >R ( save restorable variables to RSP )
-    0x08 RAM+ @ >R
+    0x08 RAM+ @ >R  ( 08 == C<* override )
     0x06 RAM+ @ >R  ( C<? )
     0x2e RAM+ @ >R  ( boot ptr )
     BLK@
     BLK( 0x2e RAM+ ! ( Point to beginning of BLK )
-    ['] _ 0x08 RAM+ ! ( 08 == C<* override )
+    [ LITN ( from PSP, B432 ) ]  0x08 RAM+ ! 
     1 0x06 RAM+ !  ( 06 == C<? )
     INTERPRET
     R> 0x2e RAM+ ! R> 0x06 RAM+ !

blk/435

@@ -0,0 +1,14 @@
+( 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
+

blk/436

@@ -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!

blk/446

@@ -1,12 +1,3 @@
-( Drop RSP until I-2 == INTERPRET. )
-: EXIT!
-    ['] INTERPRET       ( I )
-    BEGIN               ( I )
-    DUP                 ( I I )
-    R> DROP I 2- @     ( I I a )
-    = UNTIL
-    DROP
-;
 : (ok) SPC ." ok" NL ;
 : (uflw) ABORT" stack underflow" ;
 : (wnf) (print) SPC ABORT" word not found" ;

blk/456

@@ -1,13 +0,0 @@
-: .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
-;
-

blk/457

@@ -1,16 +0,0 @@
-: _
-    (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. )

emul/xcomp.fs

@@ -21,7 +21,7 @@ CURRENT @ XCURRENT !
 ( Update LATEST )
 PC ORG @ 8 + !
 ," CURRENT @ HERE ! "
-440 459 XPACKR
+440 446 XPACKR
 ," ' (key) 12 RAM+ ! "
 ORG @ 256 /MOD 2 PC! 2 PC!
 H@ 256 /MOD 2 PC! 2 PC!

recipes/rc2014/sdcard/README.md

@@ -19,7 +19,6 @@ 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
@@ -69,12 +68,30 @@ 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 stage 3
+## Building your binary
 
-Using the same technique as you used in the `eeprom` recipe, you can append
+Your Collapse OS binary needs the SDC drivers which need to be inserted during
-required words to your boot binary. There's only one required unit: `blk` from
+Cross Compilation, which needs you need to recompile it from stage 1. First,
-core words (B453). The SD card driver was already included in the base recipe
+look at B370. You'll see that it indicates a block range for the driver. That
-to save you the troubles of rebuilding from stage 1 for this recipe.
+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.
 
 ## Testing in the emulator
 

recipes/rc2014/xcomp.fs

@@ -22,12 +22,11 @@ CURRENT @ XCURRENT !
 282 LOAD  ( boot.z80 )
 393 LOAD  ( xcomp core low )
 352 LOAD  ( acia )
-372 381 LOADR  ( sdc )
 420 LOAD  ( xcomp core high )
 (entry) _
 ( Update LATEST )
 PC ORG @ 8 + !
-440 452 XPACKR ( core )
+440 446 XPACKR ( core )
 123 132 XPACKR ( linker )
 ," : _ ACIA$ RDLN$ (ok) ; _ "
 ORG @ 256 /MOD 2 PC! 2 PC!

recipes/ti84/xcomp.fs

@@ -74,7 +74,7 @@ CREATE ~FNT CPFNT3x5
 (entry) _
 ( Update LATEST )
 PC ORG @ 8 + !
-440 451 XPACKR ( core )
+440 446 XPACKR ( core )
 ," : _ LCD$ KBD$ (ok) RDLN$ ; _ "
 ORG @ 0x100 - 256 /MOD 2 PC! 2 PC!
 H@ 256 /MOD 2 PC! 2 PC!

recipes/trs80/xcomp.fs

@@ -21,7 +21,7 @@ CURRENT @ XCURRENT !
 ( Update LATEST )
 PC ORG @ 8 + !
 ," CURRENT @ HERE ! "
-440 459 XPACKR ( core )
+440 446 XPACKR ( core )
 499 500 XPACKR ( trs80.fs )
 ( 0x0a == NLPTR. TRS-80 wants CR-only newlines )
 ," : _ ['] CR 0x0a RAM+ ! BLK$ FD$ (ok) RDLN$ ; _ "