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-rw-r--r--src/Makefile6
-rw-r--r--src/casm.c1
-rw-r--r--src/cbmtapout.c282
-rw-r--r--src/cbmtapout.h56
-rw-r--r--src/example/Makefile11
-rw-r--r--src/example/c64-tap.asm24
-rw-r--r--src/example/vic20+8k-tap.asm30
-rw-r--r--src/example/vic20-tap.asm30
-rw-r--r--src/output.c8
-rw-r--r--src/output.h1
10 files changed, 445 insertions, 4 deletions
diff --git a/src/Makefile b/src/Makefile
index 0d06ee0..f80f535 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -52,7 +52,8 @@ SOURCE = casm.c \
nesout.c \
cpcout.c \
prgout.c \
- hexout.c
+ hexout.c \
+ cbmtapout.c
OBJECTS = casm.o \
expr.o \
@@ -82,7 +83,8 @@ OBJECTS = casm.o \
nesout.o \
cpcout.o \
prgout.o \
- hexout.o
+ hexout.o \
+ cbmtapout.o
$(TARGET): $(OBJECTS)
$(CC) $(CLAGS) -o $(TARGET) $(OBJECTS)
diff --git a/src/casm.c b/src/casm.c
index 54c3f73..200114d 100644
--- a/src/casm.c
+++ b/src/casm.c
@@ -697,6 +697,7 @@ int main(int argc, char *argv[])
PushValTableHandler(CPCOutputOptions(), CPCOutputSetOption);
PushValTableHandler(PRGOutputOptions(), PRGOutputSetOption);
PushValTableHandler(HEXOutputOptions(), HEXOutputSetOption);
+ PushValTableHandler(CBMTAPOutputOptions(), CBMTAPOutputSetOption);
ClearState();
diff --git a/src/cbmtapout.c b/src/cbmtapout.c
new file mode 100644
index 0000000..b220794
--- /dev/null
+++ b/src/cbmtapout.c
@@ -0,0 +1,282 @@
+/*
+
+ casm - Simple, portable assembler
+
+ Copyright (C) 2003-2024 Ian Cowburn (ianc@noddybox.co.uk)
+
+ 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 3 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/>.
+
+ -------------------------------------------------------------------------
+
+ Commodore TAP output handler.
+
+*/
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "global.h"
+#include "codepage.h"
+#include "cbmtapout.h"
+#include "expr.h"
+
+
+/* ---------------------------------------- MACROS & TYPES
+*/
+
+/* ---------------------------------------- PRIVATE TYPES AND VARS
+*/
+enum option_t
+{
+ OPT_START_ADDR,
+ OPT_SYSTEM_TYPE
+};
+
+static const ValueTable option_set[]=
+{
+ {"cbm-tap-start", OPT_START_ADDR},
+ {"cbm-tap-system", OPT_SYSTEM_TYPE},
+ {NULL}
+};
+
+typedef enum
+{
+ SYS_C64,
+ SYS_VIC20,
+ SYS_VIC20_8K
+} system_t;
+
+static ValueTable system_table[]=
+{
+ {"c64", SYS_C64},
+ {"vic20", SYS_VIC20},
+ {"vic20+8k",SYS_VIC20_8K},
+ {NULL}
+};
+
+typedef struct
+{
+ int start_addr;
+ system_t system;
+} Options;
+
+static Options options =
+{
+ -1,
+ SYS_C64
+};
+
+
+/* ---------------------------------------- PRIVATE FUNCTIONS
+*/
+static int PokeB(Byte *mem, int addr, Byte b)
+{
+ mem[addr++] = b;
+ return (addr % 0x10000);
+}
+
+
+static int PokeW(Byte *mem, int addr, int w)
+{
+ addr = PokeB(mem, addr, w & 0xff);
+ return PokeB(mem, addr, (w & 0xff00) >> 8);
+}
+
+
+static int PokeS(Byte *mem, int addr, const char *str)
+{
+ while(*str)
+ {
+ addr = PokeB(mem, addr, CodeFromNative(CP_CBM, *str++));
+ }
+
+ return addr;
+}
+
+
+static void WriteByte(FILE *fp, Byte b)
+{
+ putc(b, fp);
+}
+
+
+static void WriteWord(FILE *fp, int w)
+{
+ WriteByte(fp, w & 0xff);
+ WriteByte(fp, (w & 0xff00) >> 8);
+}
+
+
+static void WriteLongWord(FILE *fp, unsigned long l)
+{
+ WriteByte(fp, l & 0xfflu);
+ WriteByte(fp, (l & 0xff00lu) >> 8);
+ WriteByte(fp, (l & 0xff0000lu) >> 16);
+ WriteByte(fp, (l & 0xff000000lu) >> 24);
+}
+
+static void WriteASCII(FILE *fp, const char *str)
+{
+ while(*str)
+ {
+ WriteByte(fp, CodeFromNative(CP_ASCII, *str++));
+ }
+}
+
+
+/* ---------------------------------------- INTERFACES
+*/
+const ValueTable *CBMTAPOutputOptions(void)
+{
+ return option_set;
+}
+
+CommandStatus CBMTAPOutputSetOption(int opt, int argc, char *argv[],
+ int quoted[], char *err, size_t errsize)
+{
+ const ValueTable *val;
+ CommandStatus stat = CMD_OK;
+
+ CMD_ARGC_CHECK(1);
+
+ switch(opt)
+ {
+ case OPT_START_ADDR:
+ CMD_EXPR(argv[0], options.start_addr);
+ break;
+
+ case OPT_SYSTEM_TYPE:
+ CMD_TABLE(argv[0], system_table, val);
+ options.system = val->value;
+ break;
+
+ default:
+ break;
+ }
+
+ return stat;
+}
+
+int CBMTAPOutput(const char *filename, const char *filename_bank,
+ MemoryBank **bank, int count, char *error, size_t error_size)
+{
+ int f;
+
+ for(f = 0; f < count; f++)
+ {
+ FILE *fp;
+ char buff[4096];
+ const char *name;
+ Byte *mem;
+ int min, max;
+ unsigned long len;
+ char sys[16];
+ int addr;
+ int start_addr;
+ int next;
+ int i;
+
+ if (count == 1)
+ {
+ name = filename;
+ }
+ else
+ {
+ snprintf(buff, sizeof buff, filename_bank, bank[f]->number);
+ name = buff;
+ }
+
+ if (!(fp = fopen(name, "wb")))
+ {
+ snprintf(error, error_size, "Failed to open %s", name);
+ return FALSE;
+ }
+
+ switch(options.system)
+ {
+ case SYS_C64:
+ addr = 0x803;
+ start_addr = 0x801;
+ break;
+ case SYS_VIC20:
+ addr = 0x1003;
+ start_addr = 0x1001;
+ break;
+ case SYS_VIC20_8K:
+ addr = 0x1203;
+ start_addr = 0x1201;
+ break;
+ }
+
+ mem = bank[f]->memory;
+ min = bank[f]->min_address_used;
+ max = bank[f]->max_address_used;
+
+ if (min < (addr + 0x10))
+ {
+ snprintf(error, error_size, "Bank starts below a safe "
+ "area to add BASIC loader");
+
+ return FALSE;
+ }
+
+ /* We're going to prepend some BASIC
+ */
+ if (options.start_addr == -1)
+ {
+ snprintf(sys, sizeof sys, "%d", bank[f]->min_address_used);
+ }
+ else
+ {
+ snprintf(sys, sizeof sys, "%d", options.start_addr);
+ }
+
+ addr = PokeW(mem, addr, 10);
+ addr = PokeB(mem, addr, 0x9e);
+ addr = PokeS(mem, addr, sys);
+ addr = PokeB(mem, addr, 0x00);
+
+ next = addr;
+
+ addr = PokeW(mem, addr, 0x00);
+
+ PokeW(mem, start_addr, next);
+
+ min = start_addr; /* Start of BASIC */
+
+ len = max - min + 1;
+
+ /* Write out TAP file header
+ */
+ WriteASCII(fp, "C64-TAPE-RAW");
+ WriteByte(fp, 0);
+ WriteByte(fp, 0);
+ WriteByte(fp, 0);
+ WriteByte(fp, 0);
+ WriteLongWord(fp, len);
+
+ /* Output file data
+ */
+ fwrite(mem + min, len, 1, fp);
+
+ fclose(fp);
+ }
+
+ return TRUE;
+}
+
+
+/*
+vim: ai sw=4 ts=8 expandtab
+*/
diff --git a/src/cbmtapout.h b/src/cbmtapout.h
new file mode 100644
index 0000000..8169d58
--- /dev/null
+++ b/src/cbmtapout.h
@@ -0,0 +1,56 @@
+/*
+
+ casm - Simple, portable assembler
+
+ Copyright (C) 2003-2015 Ian Cowburn (ianc@noddybox.co.uk)
+
+ 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 3 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/>.
+
+ -------------------------------------------------------------------------
+
+ Commodore TAP tape output
+
+*/
+
+#ifndef CASM_CBMTAPOUT_H
+#define CASM_CBMTAPOUT_H
+
+#include "parse.h"
+#include "state.h"
+#include "cmd.h"
+
+/* ---------------------------------------- INTERFACES
+*/
+
+
+/* CBMTAP Output options
+*/
+const ValueTable *CBMTAPOutputOptions(void);
+
+CommandStatus CBMTAPOutputSetOption(int opt, int argc, char *argv[],
+ int quoted[], char *error,
+ size_t error_size);
+
+
+/* C64 CBMTAP output of assembly. Returns TRUE if OK, FALSE for failure.
+*/
+int CBMTAPOutput(const char *filename, const char *filename_bank,
+ MemoryBank **bank, int count,
+ char *error, size_t error_size);
+
+#endif
+
+/*
+vim: ai sw=4 ts=8 expandtab
+*/
diff --git a/src/example/Makefile b/src/example/Makefile
index 5d2d326..c74bbc8 100644
--- a/src/example/Makefile
+++ b/src/example/Makefile
@@ -21,7 +21,7 @@
#
ALL = spectrum.tap t64.t64 zx81.p gb.gb vcs.bin snes.sfc nes.nes cpc.cdt \
- prg.prg hex.hex vic20.prg vic20+8k.prg
+ prg.prg hex.hex vic20.prg vic20+8k.prg c64.tap vic20.tap vic20+8k.tap
CASM = ../casm
all: $(ALL) $(CASM)
@@ -67,6 +67,15 @@ vic20.prg: vic20.asm $(CASM)
vic20+8k.prg: vic20+8k.asm $(CASM)
$(CASM) vic20+8k.asm
+c64.tap: c64-tap.asm $(CASM)
+ $(CASM) c64-tap.asm
+
+vic20.tap: vic20-tap.asm $(CASM)
+ $(CASM) vic20-tap.asm
+
+vic20+8k.tap: vic20+8k-tap.asm $(CASM)
+ $(CASM) vic20+8k-tap.asm
+
clean:
rm -f $(ALL)
diff --git a/src/example/c64-tap.asm b/src/example/c64-tap.asm
new file mode 100644
index 0000000..8094607
--- /dev/null
+++ b/src/example/c64-tap.asm
@@ -0,0 +1,24 @@
+ ; Simple example C64 code
+ ;
+
+ cpu 6502
+
+ option codepage,cbm
+
+ option output-file,c64.tap
+ option output-format,cbm-tap
+ option cbm-tap-start,start
+
+ org $820
+
+main:
+ lda #0
+ clc
+loop:
+ sta 53280
+ adc #1
+ and #$0f
+ jmp loop
+
+start:
+ jmp main
diff --git a/src/example/vic20+8k-tap.asm b/src/example/vic20+8k-tap.asm
new file mode 100644
index 0000000..f457551
--- /dev/null
+++ b/src/example/vic20+8k-tap.asm
@@ -0,0 +1,30 @@
+ ; Simple example C64 code
+ ;
+
+ cpu 6502
+
+ option codepage,cbm
+
+ option output-file,vic20+8k.tap
+ option output-format,cbm-tap
+ option cbm-tap-start,start
+ option cbm-tap-system,vic20+8k
+
+ org $1300
+
+main:
+ lda #0
+ clc
+loop:
+ sta 36879
+ adc #1
+ pha
+ jsr $ffe4
+ beq nokey
+ rts
+nokey:
+ pla
+ jmp loop
+
+start:
+ jmp main
diff --git a/src/example/vic20-tap.asm b/src/example/vic20-tap.asm
new file mode 100644
index 0000000..ff5317b
--- /dev/null
+++ b/src/example/vic20-tap.asm
@@ -0,0 +1,30 @@
+ ; Simple example C64 code
+ ;
+
+ cpu 6502
+
+ option codepage,cbm
+
+ option output-file,vic20.tap
+ option output-format,cbm-tap
+ option cbm-tap-start,start
+ option cbm-tap-system,vic20
+
+ org $1100
+
+main:
+ lda #0
+ clc
+loop:
+ sta 36879
+ adc #1
+ pha
+ jsr $ffe4
+ beq nokey
+ rts
+nokey:
+ pla
+ jmp loop
+
+start:
+ jmp main
diff --git a/src/output.c b/src/output.c
index b02e36f..93abd72 100644
--- a/src/output.c
+++ b/src/output.c
@@ -58,7 +58,8 @@ typedef enum
NES,
CPC,
PRG,
- HEX
+ HEX,
+ CBM_TAP
} Format;
static char output[4096] = "output";
@@ -79,6 +80,7 @@ static ValueTable format_table[] =
{"cpc", CPC},
{"prg", PRG},
{"hex", HEX},
+ {"cbm-tap", CBM_TAP},
{NULL}
};
@@ -184,6 +186,10 @@ int OutputCode(void)
return HEXOutput(output, output_bank, bank, count,
error, sizeof error);
+ case CBM_TAP:
+ return CBMTAPOutput(output, output_bank, bank, count,
+ error, sizeof error);
+
default:
break;
}
diff --git a/src/output.h b/src/output.h
index 90cda5c..527e044 100644
--- a/src/output.h
+++ b/src/output.h
@@ -42,6 +42,7 @@
#include "cpcout.h"
#include "prgout.h"
#include "hexout.h"
+#include "cbmtapout.h"
/* ---------------------------------------- INTERFACES
*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-16 19:54:56 +0000