From: Alan Cox <alan@linux.intel.com>
Date: Sun, 15 Feb 2015 22:21:31 +0000 (+0000)
Subject: zx128: add a .z80 maker from the image
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=7991052b7198689caa09ac46a36cd38c7dadfc24;p=FUZIX.git

zx128: add a .z80 maker from the image

This is easier to work with as we can set the machine type reliably
---

diff --git a/Kernel/cpu-z80/image.mk b/Kernel/cpu-z80/image.mk
index 1e50258c..3795cf84 100644
--- a/Kernel/cpu-z80/image.mk
+++ b/Kernel/cpu-z80/image.mk
@@ -13,6 +13,8 @@ tools/bintomdv: tools/bintomdv.c
 
 tools/bin2sna: tools/bin2sna.c
 
+tools/bin2z80: tools/bin2z80.c
+
 tools/bankld/sdldz80:
 	+(cd tools/bankld; make)
 
diff --git a/Kernel/tools/bin2z80.c b/Kernel/tools/bin2z80.c
new file mode 100644
index 00000000..cab6076d
--- /dev/null
+++ b/Kernel/tools/bin2z80.c
@@ -0,0 +1,109 @@
+/*
+ *	Convert a banked FUZIX spectrum binary into a .Z80 file for ease
+ *	of testing.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <fcntl.h>
+
+static uint8_t emptybank[16384];
+static uint8_t bank0[16384];
+static uint8_t bank1[16384];
+static uint8_t bank2[16384];
+static uint8_t bank5[16384];
+static uint8_t bank7[16384];
+
+static uint8_t header[86];
+static uint8_t blkhdr[3] = { 0xFF, 0xFF, 0x00 };
+
+static void write_buf(char *name, int fd, uint8_t *buf, int len)
+{
+	if (write(fd, buf, len) != len) {
+		perror(name);
+		exit(1);
+	}
+}
+
+static void load_bank_at(uint8_t *p, char *name, int offset)
+{
+	int fd = open(name, O_RDONLY);
+	if (fd == -1) {
+		perror(name);
+		exit(1);
+	}
+	if (lseek(fd, offset, SEEK_SET) != offset) {
+		perror("lseek");
+		exit(1);
+	}
+	if (read(fd, p, 16384) < 1) {
+		perror(name);
+		exit(1);
+	}
+	close(fd);
+}
+
+static void load_bank(uint8_t *p, char *name)
+{
+	load_bank_at(p, name, 0xC000);
+}
+
+static void writeblock(int fd, int block, uint8_t *ptr)
+{
+	blkhdr[2] = 3 + block;
+	write(fd, blkhdr, 3);
+	write(fd, ptr, 16384);
+	printf("Bank %d signature %x %x %x\n",
+		block, ptr[0],ptr[1],ptr[2]);
+	
+}
+
+static void write_z80(char *name)
+{
+	int fd = open(name, O_WRONLY|O_CREAT|O_TRUNC, 0644);
+	if (fd == -1) {
+		perror(name);
+		exit(1);
+	}
+	header[8] = 0xF0;		/* set SP somewhere */
+	header[9] = 0xFF;
+	
+	header[29] = 0x40 | 1;		/* IM1, Kempston joystick */
+	header[30] = 54;
+	header[32] = 0x03;		/* Run from C003 */
+	header[33] = 0xC0;
+	header[34] = 5;			/* 128K with Interface 1 */
+	header[37] = 3;			/* Emulate LDIR and R details */
+	header[61] = 0xFF;		/* low memory is ROM */
+	header[62] = 0xFF;
+	write(fd, header, 86);		/* Header */
+
+	writeblock(fd, 0, bank0);
+	writeblock(fd, 1, bank1);
+	writeblock(fd, 2, bank5);
+	writeblock(fd, 3, emptybank);
+	writeblock(fd, 4, emptybank);
+	writeblock(fd, 5, bank2);
+	writeblock(fd, 6, emptybank);
+	writeblock(fd, 7, bank7);
+	close(fd);
+}
+
+
+int main(int argc, char *argv[])
+{
+	if (argc != 2) {
+		fprintf(stderr, "%s: file.z80\n", argv[0]);
+		exit(1);
+	}
+	load_bank_at(bank5, "common.bin", 0x8000);
+	load_bank_at(bank2, "common.bin", 0x4000);
+	load_bank(bank0, "bank1.bin");
+	load_bank(bank1, "bank2.bin");
+	load_bank(bank7, "bank3.bin");
+	write_z80(argv[1]);
+	exit(0);
+}