Convert binary output from CROSS to an Atari DOS binary file.

Author: larsbrinkhoff

Makefile

@@ -11,7 +11,7 @@ OBJS =	pdp10-opc.o info.o dis.o symbols.o \
 	timing.o timing_ka10.o timing_ki10.o memory.o weenix.o
 
 UTILS =	cat36 itsarc magdmp magfrm dskdmp \
-	macdmp macro-tapes tape-dir harscntopbm palx \
+	macdmp macro-tapes tape-dir harscntopbm palx cross \
 	ipak kldcp klfedr scrmbl unscr tvpic tito dart od10
 
 all: dis10 $(UTILS) check
@@ -75,6 +75,9 @@ harscntopbm: harscntopbm.o libwords.a
 palx: palx.o $(OBJS) libwords.a
 	$(CC) $(CFLAGS) $^ -o $@
 
+cross: cross.o $(OBJS) libwords.a
+	$(CC) $(CFLAGS) $^ -o $@
+
 kldcp: kldcp.o $(OBJS) das.o libwords.a
 	$(CC) $(CFLAGS) $^ -o $@
 

cross.c

@@ -0,0 +1,101 @@
+/* Copyright (C) 2021 Lars Brinkhoff <[email protected]>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include "dis.h"
+
+/* The binary output from CROSS is formatted into blocks, with a
+header of three words describing its type, length, and address.  After
+the data bytes comes a filler byte (or checksum, but it's always
+zero).
+
+An Atari DOS binary file is also formatted into blocks.  The file
+begins with two FF bytes, and then each block header has start and end
+address (inclusive). */
+
+static unsigned char buf[4];
+static int n = 0;
+
+static void refill (FILE *f)
+{
+  word_t word = get_word (f);
+  if (word == -1)
+    exit (0);
+
+  buf[3] = (word >> 18) & 0377;
+  buf[2] = (word >> 26) & 0377;
+  buf[1] = (word >>  0) & 0377;
+  buf[0] = (word >>  8) & 0377;
+  n = 4;
+}
+
+static int get_8 (FILE *f)
+{
+  if (n == 0)
+    refill (f);
+
+  return buf[--n];
+}
+
+static int get_16 (FILE *f)
+{
+  int word;
+  word = get_8 (f);
+  word |= get_8 (f) << 8;
+  return word;
+}
+
+static void out_8 (int word)
+{
+  putchar (word & 0xFF);
+}
+
+static void out_16 (int word)
+{
+  out_8 (word & 0xFF);
+  out_8 (word >> 8);
+}
+
+static void block (FILE *f)
+{
+  int i, type, length, address;
+
+  type = get_16 (f);
+  length = get_16 (f);
+  address = get_16 (f);
+
+  fprintf (stderr, "Type %d, length %d, address %04x\n",
+	   type, length, address);
+
+  out_16 (address);
+  out_16 (address + length - 1);
+
+  for (i = 0; i < length; i++)
+    out_8 (get_8 (f));
+
+  get_8 (f);
+}
+
+int main (void)
+{
+  input_word_format = &its_word_format;
+  
+  out_16 (0xFFFF);
+
+  for (;;)
+    block (stdin);
+
+  return 0;
+}