From 06f2daa56e0eb8e592c015b07dbeb787bb081e4d Mon Sep 17 00:00:00 2001
From: Ian C <ianc@noddybox.co.uk>
Date: Mon, 5 Jul 2021 21:37:37 +0000
Subject: Added TAP file loading.
---
source/gui.c | 2 ++
source/main.c | 16 ++++++++++---
source/snap.c | 67 +++++++++++++++++++++++++++++++++++--------------------
source/snapshot.c | 1 -
source/spec.c | 4 ++--
5 files changed, 60 insertions(+), 30 deletions(-)
(limited to 'source')
diff --git a/source/gui.c b/source/gui.c
index 604f910..94b7f94 100644
--- a/source/gui.c
+++ b/source/gui.c
@@ -59,6 +59,8 @@ typedef struct
static FSEL_File fsel[FSEL_MAX_FILES];
+char last_dir[FILENAME_MAX] = "/";
+
static void CheckPath(char *path)
{
diff --git a/source/main.c b/source/main.c
index f096f9a..0610a6f 100644
--- a/source/main.c
+++ b/source/main.c
@@ -31,6 +31,7 @@
#include "spec.h"
#include "config.h"
#include "snapshot.h"
+#include "snap.h"
#ifndef DSSPEC_VERSION
#define DSSPEC_VERSION "DEV " __TIME__ "/" __DATE__
@@ -61,7 +62,7 @@
static const char *main_menu[]=
{
"Reset Spectrum",
- "Select Tape",
+ "Load TAP File",
"Configure",
"Map Joypad to Keys",
"Save Memory Snapshot",
@@ -76,7 +77,7 @@ static const char *main_menu[]=
typedef enum
{
MenuReset,
- MenuSelectTape,
+ MenuLoadTAP,
MenuConfigure,
MenuMapJoypad,
MenuSaveSnapshot,
@@ -299,8 +300,17 @@ int main(int argc, char *argv[])
SPECReset(z80);
break;
- case MenuSelectTape:
+ case MenuLoadTAP:
+ {
+ char file[FILENAME_MAX];
+
+ if (GUI_FileSelect(last_dir, file, ".TAP"))
+ {
+ TAPCloseTape();
+ TAPOpenTape(file);
+ }
break;
+ }
case MenuConfigure:
GUI_Config();
diff --git a/source/snap.c b/source/snap.c
index 1ddb6b9..e998ba2 100644
--- a/source/snap.c
+++ b/source/snap.c
@@ -21,6 +21,9 @@
$Id: snap.c 4 2006-09-15 00:30:18Z ianc $
*/
+#include <stdlib.h>
+#include <stdio.h>
+
#include "snap.h"
/* ---------------------------------------- MACROS
@@ -38,45 +41,57 @@
/* ---------------------------------------- PRIVATE DATA
*/
-static Z80Byte *tap_file;
-static int tap_len;
-static int tap_ptr;
+static FILE *tapfile;
/* ---------------------------------------- PRIVATE FUNCTIONS
*/
-static Z80Byte GetByte(void)
+static Z80Byte GetTAPByte(void)
{
- Z80Byte ret=0;
+ int ret=0;
- if (tap_len)
+ if (tapfile)
{
- ret=tap_file[tap_ptr];
- tap_ptr=(tap_ptr+1)%tap_len;
+ ret = fgetc(tapfile);
+
+ if (ret == EOF)
+ {
+ ret = 0;
+ fclose(tapfile);
+ tapfile = NULL;
+ }
}
- return ret;
+ return (Z80Byte)ret;
}
-static Z80Word GetLSBWord(void)
+static Z80Word GetTAPLSBWord(void)
{
int c1,c2;
- c1=GetByte();
- c2=GetByte();
+ c1=GetTAPByte();
+ c2=GetTAPByte();
- return c1+(c2<<8);
+ return (Z80Word)(c1+(c2<<8));
}
/* ---------------------------------------- INTERFACES
*/
-void TAPSetTape(Z80Byte *tape, int len)
+void TAPOpenTape(const char *path)
{
- tap_file = tape;
- tap_len = len;
- tap_ptr = 0;
+ tapfile = fopen(path, "rb");
+}
+
+
+void TAPCloseTape(void)
+{
+ if (tapfile)
+ {
+ fclose(tapfile);
+ tapfile = NULL;
+ }
}
@@ -85,15 +100,15 @@ int TAPLoad(Z80Byte id, Z80Word *addr, Z80Word *len, SNAP_Poke poke)
Z80Word blen;
Z80Byte type,b,csum,tape_csum;
- if (!tap_file)
+ if (!tapfile)
{
return FALSE;
}
b=0;
- blen=GetLSBWord();
- type=GetByte();
+ blen=GetTAPLSBWord();
+ type=GetTAPByte();
csum=id;
/* Have we found the requested block?
@@ -106,7 +121,7 @@ int TAPLoad(Z80Byte id, Z80Word *addr, Z80Word *len, SNAP_Poke poke)
while(blen && *len)
{
- b=GetByte();
+ b=GetTAPByte();
csum^=b;
poke(*addr,b);
@@ -120,16 +135,20 @@ int TAPLoad(Z80Byte id, Z80Word *addr, Z80Word *len, SNAP_Poke poke)
*/
if (blen)
{
- tape_csum=GetByte();
+ tape_csum=GetTAPByte();
blen--;
}
else
+ {
tape_csum=b;
+ }
/* In case we've been request less bytes than the block size
*/
while(blen--)
- GetByte();
+ {
+ GetTAPByte();
+ }
/* Check the checksum
*/
@@ -140,7 +159,7 @@ int TAPLoad(Z80Byte id, Z80Word *addr, Z80Word *len, SNAP_Poke poke)
/* If it's the wrong type, skip it
*/
while(blen--)
- GetByte();
+ GetTAPByte();
return FALSE;
}
diff --git a/source/snapshot.c b/source/snapshot.c
index e75a359..61cffc2 100644
--- a/source/snapshot.c
+++ b/source/snapshot.c
@@ -137,7 +137,6 @@ void SNAP_Save(Z80 *cpu, SnapshotType type)
void SNAP_Load(Z80 *cpu, const char *optional_name, SnapshotType type)
{
- static char last_dir[FILENAME_MAX] = "/";
char file[FILENAME_MAX];
FILE *fp = NULL;
diff --git a/source/spec.c b/source/spec.c
index 5fa5060..e0698c2 100644
--- a/source/spec.c
+++ b/source/spec.c
@@ -306,7 +306,7 @@ static int EDCallback(Z80 *z80, Z80Val data)
if (TAPLoad(z80->AF.b[Z80_HI_WORD],
&z80->IX.w,
&z80->DE.w,
- SPECWriteSnap))
+ SPECWriteMemSNAP))
{
z80->AF.b[Z80_LO_WORD] |= eZ80_Carry;
z80->BC.w=0xb001;
@@ -394,7 +394,7 @@ void SPECWriteMem(Z80 *z80, Z80Word addr, Z80Byte val)
}
-void SPECWriteSnap(Z80Word addr, Z80Byte val)
+void SPECWriteMemSNAP(Z80Word addr, Z80Byte val)
{
if (addr>=ROMLEN)
{
--
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