Added files and got initial support working. ZX81 display needed.

1 files changed, 85 insertions, 0 deletions

diff --git a/source/stream.c b/source/stream.c
new file mode 100644
index 0000000..897fa62
--- /dev/null
+++ b/source/stream.c
@@ -0,0 +1,85 @@
+/*
+    3ds81 - Nintendo 3DS ZX81 emulator
+
+    Copyright (C) 2021  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/>
+
+    -------------------------------------------------------------------------
+
+    Provides the routines for streaming.
+
+*/
+#include "stream.h"
+
+/* The long functions are a tad convuluted, but I'm in a dash.
+*/
+
+void PUT_Byte(FILE *fp, unsigned char c)
+{
+    fputc(c, fp);
+}
+
+void PUT_Long(FILE *fp, long l)
+{
+    union {long l; unsigned char c[4];} u;
+
+    u.l = l;
+
+    fputc(u.c[0], fp);
+    fputc(u.c[1], fp);
+    fputc(u.c[2], fp);
+    fputc(u.c[3], fp);
+}
+
+void PUT_ULong(FILE *fp, unsigned long l)
+{
+    union {unsigned long l; unsigned char c[4];} u;
+
+    u.l = l;
+
+    fputc(u.c[0], fp);
+    fputc(u.c[1], fp);
+    fputc(u.c[2], fp);
+    fputc(u.c[3], fp);
+}
+
+unsigned char GET_Byte(FILE *fp)
+{
+    return (unsigned char)fgetc(fp);
+}
+
+long GET_Long(FILE *fp)
+{
+    union {long l; unsigned char c[4];} u;
+
+    u.c[0] = (unsigned char)fgetc(fp);
+    u.c[1] = (unsigned char)fgetc(fp);
+    u.c[2] = (unsigned char)fgetc(fp);
+    u.c[3] = (unsigned char)fgetc(fp);
+
+    return u.l;
+}
+
+unsigned long GET_ULong(FILE *fp)
+{
+    union {unsigned long l; unsigned char c[4];} u;
+
+    u.c[0] = (unsigned char)fgetc(fp);
+    u.c[1] = (unsigned char)fgetc(fp);
+    u.c[2] = (unsigned char)fgetc(fp);
+    u.c[3] = (unsigned char)fgetc(fp);
+
+    return u.l;
+}