blk/061

@@ -1,6 +1,6 @@
+(cont.)
 ." xxx" --     *I* Compiles string literal xxx followed by a
                call to (print).
-C<?     -- f   Returns whether there's a char waiting in buf.
 C<      -- c   Read one char from buffered input.
 DUMP    n a -- Prints n bytes at addr a in a hexdump format.
                Prints in chunks of 8 bytes. Doesn't do partial

blk/081

@@ -2,10 +2,10 @@
 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
++06       FUTURE USES   +59       z80a's variables
-+08       C<* override  +5b       FUTURE USES
++08       FLAGS         +5b       FUTURE USES
 +0a       PARSEPTR      +70       DRIVERS
-+0c       C<*           +80       RAMEND
++0c       CINPTR        +80       RAMEND
 +0e       WORDBUF
 +2e       BOOT C< PTR
 +4e       INTJUMP

blk/082

@@ -1,4 +1,4 @@
-INITIAL_SP holds the initial Stack Pointer value so
+(cont.) INITIAL_SP holds the initial Stack Pointer value so
 that we know where to reset it on ABORT
 
 CURRENT points to the last dict entry.
@@ -7,10 +7,10 @@ HERE points to current write offset.
 
 IP is the Interpreter Pointer
 
+FLAGS holds global flags. Only used for prompt output control
+for now.
+
 PARSEPTR holds routine address called on (parse)
 
-C<* holds routine address called on C<. If the C<* override
+CINPTR holds routine address called on C<
-at 0x08 is nonzero, this routine is called instead.
-
-
                                                         (cont.)

blk/083

@@ -1,7 +1,4 @@
-C<?* is a pointer to a word being called by C<?. If 0 or 1,
+(cont.) WORDBUF is the buffer used by WORD
-will return that value as-is.
-
-WORDBUF is the buffer used by WORD
 
 BOOT C< PTR is used when Forth boots from in-memory
 source. See "Initialization sequence" below.
@@ -12,5 +9,8 @@ jump to this address. If you use one of those slots for an
 interrupt, write a jump to the appropriate offset in that RAM
 location.
 
-
+CURRENTPTR points to current CURRENT. The Forth CURRENT word
-                                                        (cont.)
+doesn't return RAM+2 directly, but rather the value at this
+address. Most of the time, it points to RAM+2, but sometimes,
+when maintaining alternative dicts (during cross compilation
+for example), it can point elsewhere.                   (cont.)

blk/084

@@ -1,10 +1,4 @@
-CURRENTPTR points to current CURRENT. The Forth CURRENT word
+(cont.) FUTURE USES section is unused for now.          
-doesn't return RAM+2 directly, but rather the value at this
-address. Most of the time, it points to RAM+2, but sometimes,
-when maintaining alternative dicts (during cross compilation
-for example), it can point elsewhere.
-
-FUTURE USES section is unused for now.          
 
 DRIVERS section is reserved for recipe-specific
 drivers. Here is a list of known usages:
@@ -14,3 +8,9 @@ drivers. Here is a list of known usages:
 
 
 
+
+
+
+
+
+

blk/380

@@ -1,16 +1,16 @@
 : _err _sdcDesel ABORT" SDerr" ;
 
-( Tight definition ahead, pre-comment.
+( Initialize a SD card. This should be called at least 1ms
-
+  after the powering up of the card. )
-  Initialize a SD card. This should be called at least 1ms
+: SDC$
-  after the powering up of the card. We begin by waking up the
+( Wake the SD card up. After power up, a SD card has to receive
-  SD card. After power up, a SD card has to receive at least
+  at least 74 dummy clocks with CS and DI high. We send 80. )
-  74 dummy clocks with CS and DI high. We send 80.
+    10 0 DO _idle DROP LOOP
-  Then send cmd0 for a maximum of 10 times, success is when
+    ( call cmd0 and expect a 0x01 response (card idle)
-  we get 0x01. Then comes the CMD8. We send it with a 0x01aa
+	  this should be called multiple times. we're actually
-  argument and expect a 0x01aa argument back, along with a
+      expected to. let's call this for a maximum of 10 times. )
-  0x01 R1 response. After that, we need to repeatedly run
+    0 ( dummy )
-  CMD55+CMD41 (0x40000000) until the card goes out of idle
+    10 0 DO  ( r )
-  mode, that is, when it stops sending us 0x01 response and
+        DROP 0x40 0 0 SDCMDR1  ( CMD0 )
-  send us 0x00 instead. Any other response means that
+        DUP 0x01 = IF LEAVE THEN
-  initialization failed. )
+    LOOP 0x01 = NOT IF _err THEN                      ( cont. )

blk/381

@@ -1,16 +1,10 @@
-: SDC$
+( Then comes the CMD8. We send it with a 0x01aa argument and
-    10 0 DO _idle DROP LOOP
+  expect a 0x01aa argument back, along with a 0x01 R1
-    0 ( dummy ) 10 0 DO  ( r )
+  response. )
-        DROP 0x40 0 0 SDCMDR1  ( CMD0 )
+    0x48 0 0x1aa  ( CMD8 )
-        DUP 0x01 = IF LEAVE THEN
+    SDCMDR7                     ( r arg1 arg2 )
-    LOOP 0x01 = NOT IF _err THEN
+    0x1aa = NOT IF _err THEN    ( arg2 check )
-    0x48 0 0x1aa ( CMD8 ) SDCMDR7 ( r arg1 arg2 )
+    0 = NOT IF _err THEN        ( arg1 check )
-    0x1aa = NOT IF _err THEN      ( arg2 check )
+    0x01 = NOT IF _err THEN     ( r check )
-    0 = NOT IF _err THEN          ( arg1 check )
+
-    0x01 = NOT IF _err THEN       ( r check )
+                                                      ( cont. )
-    BEGIN
-        0x77 0 0 SDCMDR1  ( CMD55 )
-        0x01 = NOT IF _err THEN
-        0x69 0x4000 0x0000 SDCMDR1  ( CMD41 )
-        DUP 0x01 > IF _err THEN
-    NOT UNTIL ; ( out of idle mode, success! )

blk/382

@@ -0,0 +1,13 @@
+( Now we need to repeatedly run CMD55+CMD41 (0x40000000)
+  until the card goes out of idle mode, that is, when it stops
+  sending us 0x01 response and send us 0x00 instead. Any other
+  response means that initialization failed. )
+    BEGIN
+        0x77 0 0 SDCMDR1  ( CMD55 )
+        0x01 = NOT IF _err THEN
+        0x69 0x4000 0x0000 SDCMDR1  ( CMD41 )
+        DUP 0x01 > IF _err THEN
+    NOT UNTIL
+    ( Out of idle mode! Success! )
+;
+

blk/393

@@ -1,4 +1,5 @@
 : RAM+ [ RAMSTART LITN ] + ;
+: FLAGS 0x08 RAM+ ;
 : (parse*) 0x0a RAM+ ;
 : HERE 0x04 RAM+ ;
 : CURRENT* 0x51 RAM+ ;
@@ -8,8 +9,7 @@
 : (find) CURRENT @ SWAP _find ;
 
 : QUIT
-    (resRS)
+    0 FLAGS ! (resRS)
-    0 0x08 RAM+ !  ( 08 == C<* override )
     LIT< INTERPRET (find) DROP EXECUTE
 ;
 394 407 LOADR

blk/398

@@ -2,12 +2,7 @@
   for an abort message )
 : (parse) (parsed) NOT IF ABORT THEN ;
 
-: C<? 0x06 RAM+ @ DUP 2 > IF EXECUTE THEN ( 06 == C<?* ) ;
+: C< 0x0c RAM+ @ EXECUTE ( 0c == CINPTR ) ;
-: C<
-    0x08 RAM+ @  ( 08 == C<* override )
-    DUP NOT IF DROP 0x0c RAM+ @ THEN  ( 0c == C<* )
-    EXECUTE
-;
 
 : , HERE @ ! HERE @ 2+ HERE ! ;
 

blk/403

@@ -2,8 +2,13 @@
     BEGIN
     WORD
     (find)
-    NOT IF (parse*) @ THEN EXECUTE
+    IF
-    C<? NOT IF LIT< (ok) (find) IF EXECUTE THEN THEN
+        1 FLAGS !
+        EXECUTE
+        0 FLAGS !
+    ELSE
+        (parse*) @ EXECUTE
+    THEN
     AGAIN
 ;
 

blk/405

@@ -3,11 +3,8 @@
     LIT< (parse) (find) DROP (parse*) !
     ( 2e == SYSTEM SCRATCHPAD )
     CURRENT @ 0x2e RAM+ !
-    0 0x08 RAM+ !  ( 08 == C<* override )
+    ( 0c == CINPTR )
-    ( 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

emul/.gitignore

@@ -1,8 +1,7 @@
-/stage1
+/forth/stage1
-/stage1dbg
+/forth/stage1dbg
-/stage2
+/forth/stage2
-/forth
+/forth/forth
-/*-bin.h
+/*/*-bin.h
-/core.bin
+/*/*.bin
-/forth?.bin
 /blkfs

emul/Makefile

@@ -1,7 +1,7 @@
-TARGETS = forth stage2
+TARGETS = forth/forth forth/stage2
 # Those Forth source files are in a particular order
 FORTHSRCS = core.fs cmp.fs print.fs parse.fs readln.fs fmt.fs blk.fs
-FORTHSRC_PATHS = ${FORTHSRCS:%=../forth/%} run.fs
+FORTHSRC_PATHS = ${FORTHSRCS:%=../forth/%} forth/run.fs
 OBJS = emul.o libz80/libz80.o
 SLATEST = ../tools/slatest
 STRIPFC = ../tools/stripfc
@@ -23,43 +23,43 @@ $(BLKUNPACK): $(BLKPACK)
 
 # z80c.bin is not in the prerequisites because it's a bootstrap
 # binary that should be updated manually through make updatebootstrap.
-forth0.bin: $(SLATEST)
+forth/forth0.bin: $(SLATEST)
-	cp z80c.bin $@
+	cp forth/z80c.bin $@
 	$(SLATEST) $@
-	cat pre.fs emul.fs >> $@
+	cat forth/pre.fs forth/emul.fs >> $@
 
-forth0-bin.h: forth0.bin $(BIN2C)
+forth/forth0-bin.h: forth/forth0.bin $(BIN2C)
-	$(BIN2C) KERNEL < forth0.bin | tee $@ > /dev/null
+	$(BIN2C) KERNEL < forth/forth0.bin | tee $@ > /dev/null
 
-stage1: stage.c $(OBJS) forth0-bin.h 
+forth/stage1: forth/stage.c $(OBJS) forth/forth0-bin.h 
-	$(CC) stage.c $(OBJS) -o $@
+	$(CC) forth/stage.c $(OBJS) -o $@
 
-stage1dbg: stage.c $(OBJS) forth0-bin.h 
+forth/stage1dbg: forth/stage.c $(OBJS) forth/forth0-bin.h 
-	$(CC) -DDEBUG stage.c $(OBJS) -o $@
+	$(CC) -DDEBUG forth/stage.c $(OBJS) -o $@
 
 # We don't really need to use stripfc, but we do it anyway to test that we
 # don't mistakenly break our code with that tool. It's easier to debug here.
-core.bin: $(FORTHSRC_PATHS) stage1
+forth/core.bin: $(FORTHSRC_PATHS) forth/stage1
-	cat $(FORTHSRC_PATHS) stop.fs | $(STRIPFC) | ./stage1 > $@
+	cat $(FORTHSRC_PATHS) ./forth/stop.fs | $(STRIPFC) | ./forth/stage1 > $@
 
-forth1.bin: core.bin $(SLATEST)
+forth/forth1.bin: forth/core.bin $(SLATEST)
-	cat z80c.bin core.bin > $@
+	cat forth/z80c.bin forth/core.bin > $@
 	$(SLATEST) $@
 
-forth1-bin.h: forth1.bin $(BIN2C)
+forth/forth1-bin.h: forth/forth1.bin $(BIN2C)
-	$(BIN2C) KERNEL < forth1.bin > $@
+	$(BIN2C) KERNEL < forth/forth1.bin > $@
 
-stage2: stage.c $(OBJS) forth1-bin.h blkfs-bin.h
+forth/stage2: forth/stage.c $(OBJS) forth/forth1-bin.h forth/blkfs-bin.h
-	$(CC) -DSTAGE2 stage.c $(OBJS) -o $@
+	$(CC) -DSTAGE2 forth/stage.c $(OBJS) -o $@
 
 blkfs: $(BLKPACK)
 	$(BLKPACK) ../blk > $@
 
-blkfs-bin.h: blkfs $(BIN2C)
+forth/blkfs-bin.h: blkfs $(BIN2C)
 	$(BIN2C) BLKFS < blkfs > $@
 
-forth: forth.c $(OBJS) forth1-bin.h blkfs-bin.h
+forth/forth: forth/forth.c $(OBJS) forth/forth1-bin.h blkfs
-	$(CC) forth.c $(OBJS) -o $@
+	$(CC) forth/forth.c $(OBJS) -o $@
 
 libz80/libz80.o: libz80/z80.c
 	$(MAKE) -C libz80/codegen opcodes
@@ -70,8 +70,8 @@ emul.o: emul.c
 
 
 .PHONY: updatebootstrap
-updatebootstrap: stage2
+updatebootstrap: forth/stage2
-	cat xcomp.fs | ./stage2 > z80c.bin
+	cat ./forth/xcomp.fs | ./forth/stage2 > ./forth/z80c.bin
 
 .PHONY: pack
 pack:
@@ -83,5 +83,5 @@ unpack:
 
 .PHONY: clean
 clean:
-	rm -f $(TARGETS) emul.o *-bin.h forth?.bin blkfs
+	rm -f $(TARGETS) emul.o forth/*-bin.h forth/forth?.bin blkfs
 	$(MAKE) -C ../tools clean

emul/forth/forth.c

@@ -2,9 +2,8 @@
 #include <stdio.h>
 #include <unistd.h>
 #include <termios.h>
-#include "emul.h"
+#include "../emul.h"
 #include "forth1-bin.h"
-#include "blkfs-bin.h"
 
 // in sync with glue.asm
 #define RAMSTART 0x900
@@ -103,12 +102,6 @@ int main(int argc, char *argv[])
         return 1;
     }
     blkfp = fopen("blkfs", "r+");
-    if (blkfp) {
-        fprintf(stderr, "Using blkfs file\n");
-    } else {
-        blkfp = fmemopen((char*)BLKFS, sizeof(BLKFS), "r");
-        fprintf(stderr, "Using in-memory read-only blkfs\n");
-    }
     Machine *m = emul_init();
     m->ramstart = RAMSTART;
     m->iord[STDIO_PORT] = iord_stdio;

emul/forth/run.fs

@@ -19,6 +19,5 @@
     ['] EFS! BLK!* !
     RDLN$
     LIT< _sys [entry]
-    ." Collapse OS" CRLF
     INTERPRET
 ;

emul/forth/stage.c

@@ -1,7 +1,7 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <unistd.h>
-#include "emul.h"
+#include "../emul.h"
 #ifdef STAGE2
 #include "forth1-bin.h"
 #include "blkfs-bin.h"

forth/blk.fs

@@ -61,28 +61,28 @@
 ;
 
 : LOAD
-    ( save BLK>, C<* override and boot< ptr to RSP )
+    ( save BLK>, CINPTR and boot< ptr to RSP )
     BLK> @ >R
-    0x08 RAM+ @ >R
+    0x0c RAM+ @ >R
     0x2e RAM+ @ >R
     BLK@
     ( Point to beginning of BLK )
     BLK( 0x2e RAM+ !
-    ( 08 == C<* override )
+    ( 0c == CINPTR )
-    ['] _ 0x08 RAM+ !
+    ['] _ 0x0c RAM+ !
     INTERPRET
     R> 0x2e RAM+ !
-    ( Before we restore C<* are we restoring it to "_"?
+    ( Before we restore CINPTR, are we restoring it to "_"?
       if yes, it means we're in a nested LOAD which means we
       should also load back the saved BLK>. Otherwise, we can
       ignore the BLK> from RSP. )
-    I 0x08 RAM+ @ = IF
+    I 0x0c RAM+ @ = IF
         ( nested load )
-        R> DROP ( C<* )
+        R> DROP ( CINPTR )
         R> BLK@
     ELSE
         ( not nested )
-        R> 0x08 RAM+ !
+        R> 0x0c RAM+ !
         R> DROP ( BLK> )
     THEN
 ;

forth/core.fs

@@ -3,7 +3,7 @@
     CURRENT @ 1-
     DUP C@ 128 OR SWAP C!
 ;
-: [ INTERPRET ; IMMEDIATE
+: [ INTERPRET 1 FLAGS ! ; IMMEDIATE
 : ] R> DROP ;
 : LITS 34 , SCPY ;
 : LIT< WORD LITS ; IMMEDIATE

forth/print.fs

@@ -26,12 +26,10 @@
 : ABORT" [COMPILE] ." COMPILE ABORT ; IMMEDIATE
 
 : (uflw) ABORT" stack underflow" ;
+: (wnf) ABORT" word not found" ;
 
 : BS 8 EMIT ;
 : LF 10 EMIT ;
 : CR 13 EMIT ;
 : CRLF CR LF ;
 : SPC 32 EMIT ;
-
-: (wnf) (print) SPC ABORT" word not found" ;
-: (ok) SPC ." ok" CRLF ;

forth/readln.fs

@@ -54,16 +54,17 @@
 
 ( Read one line in input buffer and make IN> point to it )
 : (rdln)
+    ( Should we prompt? if we're executing a word, FLAGS bit
+      0, then we shouldn't. )
+    FLAGS @ 0x1 AND NOT IF '>' EMIT SPC THEN
     (infl)
     BEGIN (rdlnc) NOT UNTIL
     LF IN( IN> !
 ;
 
-: RDLN<? IN> @ C@ ;
-
 ( And finally, implement a replacement for the (c<) routine )
-: RDLN<
+: (rdln<)
-    RDLN<?                      ( c )
+    IN> @ C@                    ( c )
     ( not EOL? good, inc and return )
     DUP IF 1 IN> +! EXIT THEN   ( c )
     ( EOL ? readline. we still return typed char though )
@@ -78,7 +79,6 @@
       the last typed 0x0a and one for the following NULL. )
     INBUFSZ 4 + ALLOT
     (infl)
-    ['] RDLN<? 0x06 RAM+ !
+    ['] (rdln<) 0x0c RAM+ !
-    ['] RDLN< 0x0c RAM+ !
 ;
 

recipes/rc2014/Makefile

@@ -1,7 +1,7 @@
 TARGET = stage1.bin
 BASEDIR = ../..
 FDIR = $(BASEDIR)/forth
-EDIR = $(BASEDIR)/emul
+EDIR = $(BASEDIR)/emul/forth
 STAGE2 = $(EDIR)/stage2
 EMUL = $(BASEDIR)/emul/hw/rc2014/classic
 
@@ -36,3 +36,4 @@ $(EMUL):
 .PHONY: emul
 emul: $(EMUL) $(TARGET)
 	$(EMUL) $(TARGET)
+	

recipes/rc2014/run.fs

@@ -1,7 +1,9 @@
 : (c<) KEY DUP EMIT ;
-: _
+: INIT
     ACIA$
     ." Collapse OS" CRLF
     ( 0c == CINPTR )
     ['] (c<) 0x0c RAM+ !
-; _
+;
+INIT
+

recipes/rc2014/zasm/.gitignore

@@ -0,0 +1,2 @@
+/cfsin/zasm
+/cfsin/user.h

recipes/rc2014/zasm/Makefile

@@ -0,0 +1,30 @@
+SHELLAPPS = zasm sdct memt at28w
+APPTARGETS = ${SHELLAPPS:%=cfsin/%} 
+CFSTARGETS = $(APPTARGETS) cfsin/user.h
+BASEDIR = ../../..
+ZASM = $(BASEDIR)/emul/zasm/zasm
+KERNEL = $(BASEDIR)/kernel
+APPS = $(BASEDIR)/apps
+CFSPACK = $(BASEDIR)/tools/cfspack/cfspack
+
+.PHONY: all
+all: os.bin sdcard.cfs
+
+os.bin: glue.asm
+	$(ZASM) $(KERNEL) $(APPS) < glue.asm > $@
+
+$(CFSPACK):
+	make -C $(BASEDIR)/tools/cfspack
+
+sdcard.cfs: $(CFSTARGETS) $(CFSPACK)
+	$(CFSPACK) cfsin > $@
+
+$(APPTARGETS): $(ZASMBIN)
+	$(ZASM) $(KERNEL) $(APPS) user.h < $(APPS)/${@:cfsin/%=%}/glue.asm > $@
+
+cfsin/user.h: user.h
+	cp user.h $@
+
+.PHONY: clean
+clean:
+	rm -f $(CFSTARGETS) sdcard.cfs os.bin

recipes/rc2014/zasm/README.md

@@ -0,0 +1,109 @@
+# Assembling binaries
+
+For a system to be able to self-reproduce, it needs to assemble source z80
+assembly to binary.
+
+## Goals
+
+Have a RC2014 assemble a Collapse OS kernel with its source living on a CFS on
+a SD card.
+
+## Gathering parts
+
+* Same parts as the [SD card recipe](../sdcard).
+
+## The zasm binary
+
+To achieve our goal in this recipe, we'll need a zasm binary on the SD card.
+This zasm binary needs to be compiled with the right jump offsets for the kernel
+we build in this recipe. These offsets are in `user.h` and are closely in sync
+with the configuration in `glue.asm`.
+
+`user.h` is then included in `apps/zasm/glue.asm`.
+
+The makefile in this recipe takes care of compiling zasm with the proper
+`user.h` file and place it in `cfsin/zasm`
+
+## The userland source
+
+The code we're going to compile is `cfsin/hello.asm`. As you can see, we also
+include `user.h` in this source code or else `ld hl, sAwesome` would load the
+wrong offset.
+
+Because of this, the Makefile takes care of copying `user.h` in our filesystem.
+
+## Preparing the card and kernel
+
+After running `make`, you'll end up with `sdcard.cfs` which you can load the
+same way you did in the SD card recipe.
+
+You will also have `os.bin`, which you can flash on your EEPROM the same way
+you already did before.
+
+## Running it
+
+Compiling and running `hello.asm` is done very much like in
+[the shell emulator](../../../doc/zasm.md):
+
+    Collapse OS
+    > sdci
+    > fson
+    > fopen 0 hello.asm
+    > fnew 1 dest
+    > fopen 1 dest
+    > zasm 1 2
+    > dest
+    Assembled from a RC2014
+    >
+
+That RC2014 is starting to feel powerful now, right?
+
+## Test your hardware
+
+Now that you have a fully functional filesystem that can load programs and run
+them easily, you'll see that this recipe's CFS include a couple of programs
+besides `zasm`. Among them, there's `sdct` that stress tests reading and
+writing on the SD card and `memt` that stress tests RAM. You might be
+interested in running them. Look at their description in `apps/`. All you need
+to to do run them is to type their name.
+
+## Assembling the kernel
+
+Now let's go for something a little more fun! Jiu-jitsu? No, you're not going to
+learn jiu-jitsu! You're going to assemble the kernel from within your RC2014!
+
+The makefile doesn't prepare a CFS blob for this, let's learn to build that blob
+yourself. First of all, we'll need to have what we already had in `sdcard.cfs`
+because it has `zasm` and `user.h`. But we're going to add the contents of
+the `/kernel/` directory to it.
+
+    $ cp ../../../kernel/*.{h,asm} cfsin
+
+You'll also need your glue file:
+
+    $ cp glue.asm cfsin
+
+You're now ready to re-make your CFS:
+
+    $ rm sdcard.cfs && make
+
+Now you can write this into your card and boot Collapse OS:
+
+    Collapse OS
+    > sdci
+    > fson
+    > fopn 0 glue.asm
+    > fnew 10 dest
+    > fopen 1 dest
+    > zasm 1 2          # This takes a while. About 7 minutes.
+    > sdcf              # success! sdcf flushes SD card buffers to the card.
+
+Now let's go verify that we assembled the right thing. Pop out the card and
+plug it in your "modern" computer. Pipe the device directly through `cfsunpack`
+to unpack the FS into a directory (it will stop reading when it stops seeing
+CFS blocks):
+
+    $ sudo cat /dev/sdX | ../../../tools/cfspack/cfsunpack cfsout
+    $ cmp cfsout/dest ../os.bin
+
+They're the same! Your RC2014 assembled a full Collapse OS kernel all by itself!

recipes/rc2014/zasm/cfsin/hello.asm

@@ -0,0 +1,10 @@
+.inc "user.h"
+
+	ld	hl, sAwesome
+	call	printstr
+	xor	a		; success
+	ret
+
+sAwesome:
+	.db	"Assembled from a RC2014", 0x0d, 0x0a, 0
+

recipes/rc2014/zasm/glue.asm

@@ -0,0 +1,151 @@
+; classic RC2014 setup (8K ROM + 32K RAM) and a stock Serial I/O module
+; The RAM module is selected on A15, so it has the range 0x8000-0xffff
+.equ	RAMSTART	0x8000
+; Kernel RAMEND last check: 0x9933
+; We allocate at least 0x100 bytes for the stack, which is why we have this
+; threshold.
+.equ	RAMEND		0x9b00
+.equ	USER_CODE	RAMEND  ; in sync with user.h
+.equ	ACIA_CTL	0x80	; Control and status. RS off.
+.equ	ACIA_IO		0x81	; Transmit. RS on.
+
+	jp	init	; 3 bytes
+
+; *** Jump Table ***
+	jp	strncmp
+	jp	upcase
+	jp	findchar
+	jp	blkSel
+	jp	blkSet
+	jp	fsFindFN
+	jp	fsOpen
+	jp	fsGetB
+	jp	printstr
+	jp	printcrlf
+	jp	_blkGetB
+	jp	_blkPutB
+	jp	_blkSeek
+	jp	_blkTell
+	jp	sdcGetB
+	jp	sdcPutB
+	jp	blkGetB
+
+; interrupt hook
+.fill	0x38-$
+jp	aciaInt
+
+; *** cont. ***
+
+	jp	stdioPutC
+
+.inc "err.h"
+.inc "ascii.h"
+.inc "blkdev.h"
+.inc "fs.h"
+.inc "core.asm"
+.inc "str.asm"
+.equ	ACIA_RAMSTART		RAMSTART
+.inc "acia.asm"
+.equ	BLOCKDEV_RAMSTART	ACIA_RAMEND
+.equ	BLOCKDEV_COUNT		4
+.inc "blockdev.asm"
+; List of devices
+.dw	sdcGetB, sdcPutB
+.dw	blk1GetB, blk1PutB
+.dw	blk2GetB, blk2PutB
+.dw	mmapGetB, mmapPutB
+
+
+.equ	MMAP_START	0xe000
+.inc "mmap.asm"
+
+.equ	STDIO_RAMSTART	BLOCKDEV_RAMEND
+.equ	STDIO_GETC	aciaGetC
+.equ	STDIO_PUTC	aciaPutC
+.inc "stdio.asm"
+
+.equ	FS_RAMSTART	STDIO_RAMEND
+.equ	FS_HANDLE_COUNT	2
+.inc "fs.asm"
+
+; *** BASIC ***
+
+; RAM space used in different routines for short term processing.
+.equ	SCRATCHPAD_SIZE	STDIO_BUFSIZE
+.equ	SCRATCHPAD	FS_RAMEND
+.inc "lib/util.asm"
+.inc "lib/ari.asm"
+.inc "lib/parse.asm"
+.inc "lib/fmt.asm"
+.equ	EXPR_PARSE	parseLiteralOrVar
+.inc "lib/expr.asm"
+.inc "basic/util.asm"
+.inc "basic/parse.asm"
+.inc "basic/tok.asm"
+.equ	VAR_RAMSTART	SCRATCHPAD+SCRATCHPAD_SIZE
+.inc "basic/var.asm"
+.equ	BUF_RAMSTART	VAR_RAMEND
+.inc "basic/buf.asm"
+.inc "basic/blk.asm"
+.inc "basic/sdc.asm"
+.equ	BFS_RAMSTART	BUF_RAMEND
+.inc "basic/fs.asm"
+.equ	BAS_RAMSTART	BFS_RAMEND
+.inc "basic/main.asm"
+
+.equ	SDC_RAMSTART	BAS_RAMEND
+.equ	SDC_PORT_CSHIGH	6
+.equ	SDC_PORT_CSLOW	5
+.equ	SDC_PORT_SPI	4
+.inc "sdc.asm"
+
+.out	SDC_RAMEND
+
+init:
+	di
+	ld	sp, RAMEND
+	im	1
+	call	aciaInit
+	call	fsInit
+	call	basInit
+	ld	hl, basFindCmdExtra
+	ld	(BAS_FINDHOOK), hl
+
+	xor	a
+	ld	de, BLOCKDEV_SEL
+	call	blkSel
+
+	ei
+	jp	basStart
+
+basFindCmdExtra:
+	ld	hl, basFSCmds
+	call	basFindCmd
+	ret	z
+	ld	hl, basBLKCmds
+	call	basFindCmd
+	ret	z
+	ld	hl, basSDCCmds
+	call	basFindCmd
+	ret	z
+	jp	basPgmHook
+
+; *** blkdev 1: file handle 0 ***
+
+blk1GetB:
+	ld	ix, FS_HANDLES
+	jp	fsGetB
+
+blk1PutB:
+	ld	ix, FS_HANDLES
+	jp	fsPutB
+
+; *** blkdev 2: file handle 1 ***
+
+blk2GetB:
+	ld	ix, FS_HANDLES+FS_HANDLE_SIZE
+	jp	fsGetB
+
+blk2PutB:
+	ld	ix, FS_HANDLES+FS_HANDLE_SIZE
+	jp	fsPutB

recipes/rc2014/zasm/user.h

@@ -0,0 +1,23 @@
+.org    0x9b00
+
+; *** JUMP TABLE ***
+.equ    strncmp        0x03
+.equ    upcase         @+3
+.equ    findchar       @+3
+.equ    blkSel         @+3
+.equ    blkSet         @+3
+.equ    fsFindFN       @+3
+.equ    fsOpen         @+3
+.equ    fsGetB         @+3
+.equ    printstr       @+3
+.equ    printcrlf      @+3
+.equ    _blkGetB       @+3
+.equ    _blkPutB       @+3
+.equ    _blkSeek       @+3
+.equ    _blkTell       @+3
+.equ    sdcGetB        @+3
+.equ    sdcPutB        @+3
+.equ    blkGetB        @+3
+
+; *** cont. ***
+.equ    stdioPutC      0x3b

tests/Makefile

@@ -2,5 +2,5 @@ EMULDIR = ../emul
 
 .PHONY: run
 run:
-	$(MAKE) -C $(EMULDIR) all
+	$(MAKE) -C $(EMULDIR) forth/forth
 	cd forth && ./runtests.sh

tests/forth/runtests.sh

@@ -1,7 +1,8 @@
 #!/bin/sh -e
 
 BASE=../..
-EXEC="${BASE}/emul/forth"
+EXEC="${BASE}/emul/forth/forth"
+FDIR="${BASE}/forth"
 TMP=$(mktemp)
 
 chk() {

tests/forth/test_sdc.fs

@@ -1,10 +0,0 @@
-212 LOAD ( z80a )
-: SDC_SPI 4 ;
-: SDC_CSLOW 5 ;
-: SDC_CSHIGH 6 ;
-372 LOAD ( sdc.z80 )
-374 LOAD ( sdc.fs )
-
-0x0000 0x0000 _crc16 0x0000 #eq
-0x0000 0x0001 _crc16 0x1021 #eq
-0x5678 0x1234 _crc16 0x43c4 #eq