Latest compatible version of Classicube from the original GitHub repository (https://github.com/ClassiCube/ClassiCube) that can be compiled on Classicube for PowerMac PPC running Mac OS X 10.4.

2025-12-17 13:17:57 +02:00
commit c71492f846
1248 changed files with 422858 additions and 0 deletions
--- a/misc/32x/hw_32x.c
+++ b/misc/32x/hw_32x.c
@@ -0,0 +1,256 @@
+/*
+ * Licensed under the BSD license
+ *
+ * debug_32x.c - Debug screen functions.
+ *
+ * Copyright (c) 2005 Marcus R. Brown <mrbrown@ocgnet.org>
+ * Copyright (c) 2005 James Forshaw <tyranid@gmail.com>
+ * Copyright (c) 2005 John Kelley <ps2dev@kelley.ca>
+ *
+ * Altered for 32X by Chilly Willy
+ */
+
+#include "32x.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+static int init = 0;
+static unsigned short fgc = 0, bgc = 0;
+static unsigned char fgs = 0, bgs = 0;
+
+static unsigned short currentFB = 0;
+
+void Hw32xSetFGColor(int s, int r, int g, int b)
+{
+    volatile unsigned short *palette = &MARS_CRAM;
+    fgs = s;
+    fgc = COLOR(r, g, b);
+    palette[fgs] = fgc;
+}
+
+void Hw32xSetBGColor(int s, int r, int g, int b)
+{
+    volatile unsigned short *palette = &MARS_CRAM;
+    bgs = s;
+    bgc = COLOR(r, g, b);
+    palette[bgs] = bgc;
+}
+
+void Hw32xInit(int vmode, int lineskip)
+{
+    volatile unsigned short *frameBuffer16 = &MARS_FRAMEBUFFER;
+    int i;
+
+    // Wait for the SH2 to gain access to the VDP
+    while ((MARS_SYS_INTMSK & MARS_SH2_ACCESS_VDP) == 0) ;
+
+    if (vmode == MARS_VDP_MODE_32K)
+    {
+        // Set 16-bit direct mode, 224 lines
+        MARS_VDP_DISPMODE = MARS_224_LINES | MARS_VDP_MODE_32K;
+
+        // init both framebuffers
+
+        // Flip the framebuffer selection bit and wait for it to take effect
+        MARS_VDP_FBCTL = currentFB ^ 1;
+        while ((MARS_VDP_FBCTL & MARS_VDP_FS) == currentFB) ;
+        currentFB ^= 1;
+        // rewrite line table
+        for (i=0; i<224/(lineskip+1); i++)
+        {
+            if (lineskip)
+            {
+                int j = lineskip + 1;
+                while (j)
+                {
+                    frameBuffer16[i*(lineskip+1) + (lineskip + 1 - j)] = i*320 + 0x100; /* word offset of line */
+                    j--;
+                }
+            }
+            else
+            {
+                if (i<200)
+                    frameBuffer16[i] = i*320 + 0x100; /* word offset of line */
+                else
+                    frameBuffer16[i] = 200*320 + 0x100; /* word offset of line */
+            }
+        }
+        // clear screen
+        for (i=0x100; i<0x10000; i++)
+            frameBuffer16[i] = 0;
+
+        // Flip the framebuffer selection bit and wait for it to take effect
+        MARS_VDP_FBCTL = currentFB ^ 1;
+        while ((MARS_VDP_FBCTL & MARS_VDP_FS) == currentFB) ;
+        currentFB ^= 1;
+        // rewrite line table
+        for (i=0; i<224/(lineskip+1); i++)
+        {
+            if (lineskip)
+            {
+                int j = lineskip + 1;
+                while (j)
+                {
+                    frameBuffer16[i*(lineskip+1) + (lineskip + 1 - j)] = i*320 + 0x100; /* word offset of line */
+                    j--;
+                }
+            }
+            else
+            {
+                if (i<200)
+                    frameBuffer16[i] = i*320 + 0x100; /* word offset of line */
+                else
+                    frameBuffer16[i] = 200*320 + 0x100; /* word offset of line */
+            }
+        }
+        // clear screen
+        for (i=0x100; i<0x10000; i++)
+            frameBuffer16[i] = 0;
+    }
+
+    Hw32xSetFGColor(255,31,31,31);
+    Hw32xSetBGColor(0,0,0,0);
+    init = vmode;
+}
+
+void Hw32xScreenClear()
+{
+    int i;
+    int l = (init == MARS_VDP_MODE_256) ? 320*224/2 + 0x100 : 320*200 + 0x100;
+    volatile unsigned short *frameBuffer16 = &MARS_FRAMEBUFFER;
+
+    // clear screen
+    for (i=0x100; i<l; i++)
+        frameBuffer16[i] = 0;
+
+    // Flip the framebuffer selection bit and wait for it to take effect
+    MARS_VDP_FBCTL = currentFB ^ 1;
+    while ((MARS_VDP_FBCTL & MARS_VDP_FS) == currentFB) ;
+    currentFB ^= 1;
+
+    // clear screen
+    for (i=0x100; i<l; i++)
+        frameBuffer16[i] = 0;
+
+    Hw32xSetFGColor(255,31,31,31);
+    Hw32xSetBGColor(0,0,0,0);
+}
+
+void Hw32xDelay(int ticks)
+{
+    unsigned long ct = MARS_SYS_COMM12 + ticks;
+    while (MARS_SYS_COMM12 < ct) ;
+}
+
+void Hw32xScreenFlip(int wait)
+{
+    // Flip the framebuffer selection bit
+    MARS_VDP_FBCTL = currentFB ^ 1;
+    if (wait)
+    {
+        while ((MARS_VDP_FBCTL & MARS_VDP_FS) == currentFB) ;
+        currentFB ^= 1;
+    }
+}
+
+void Hw32xFlipWait()
+{
+    while ((MARS_VDP_FBCTL & MARS_VDP_FS) == currentFB) ;
+    currentFB ^= 1;
+}
+
+
+// MD Command support code ---------------------------------------------
+
+unsigned short HwMdReadPad(int port)
+{
+    if (port == 0)
+        return MARS_SYS_COMM8;
+    else if (port == 1)
+        return MARS_SYS_COMM10;
+    else
+        return SEGA_CTRL_NONE;
+}
+
+unsigned char HwMdReadSram(unsigned short offset)
+{
+    while (MARS_SYS_COMM0) ; // wait until 68000 has responded to any earlier requests
+    MARS_SYS_COMM2 = offset;
+    MARS_SYS_COMM0 = 0x0100; // Read SRAM
+    while (MARS_SYS_COMM0) ;
+    return MARS_SYS_COMM2 & 0x00FF;
+}
+
+void HwMdWriteSram(unsigned char byte, unsigned short offset)
+{
+    while (MARS_SYS_COMM0) ; // wait until 68000 has responded to any earlier requests
+    MARS_SYS_COMM2 = offset;
+    MARS_SYS_COMM0 = 0x0200 | byte; // Write SRAM
+    while (MARS_SYS_COMM0) ;
+}
+
+int HwMdReadMouse(int port)
+{
+    unsigned int mouse1, mouse2;
+    while (MARS_SYS_COMM0) ; // wait until 68000 has responded to any earlier requests
+    MARS_SYS_COMM0 = 0x0300|port; // tells 68000 to read mouse
+    while (MARS_SYS_COMM0 == (0x0300|port)) ; // wait for mouse value
+    mouse1 = MARS_SYS_COMM0;
+    mouse2 = MARS_SYS_COMM2;
+    MARS_SYS_COMM0 = 0; // tells 68000 we got the mouse value
+    return (int)((mouse1 << 16) | mouse2);
+}
+
+void HwMdClearScreen(void)
+{
+    while (MARS_SYS_COMM0) ; // wait until 68000 has responded to any earlier requests
+    MARS_SYS_COMM0 = 0x0400; // Clear Screen (Name Table B)
+    while (MARS_SYS_COMM0) ;
+}
+
+void HwMdSetOffset(unsigned short offset)
+{
+    while (MARS_SYS_COMM0) ; // wait until 68000 has responded to any earlier requests
+    MARS_SYS_COMM2 = offset;
+    MARS_SYS_COMM0 = 0x0500; // Set offset (into either Name Table B or VRAM)
+    while (MARS_SYS_COMM0) ;
+}
+
+void HwMdSetNTable(unsigned short word)
+{
+    while (MARS_SYS_COMM0) ; // wait until 68000 has responded to any earlier requests
+    MARS_SYS_COMM2 = word;
+    MARS_SYS_COMM0 = 0x0600; // Set word at offset in Name Table B
+    while (MARS_SYS_COMM0) ;
+}
+
+void HwMdSetVram(unsigned short word)
+{
+    while (MARS_SYS_COMM0) ; // wait until 68000 has responded to any earlier requests
+    MARS_SYS_COMM2 = word;
+    MARS_SYS_COMM0 = 0x0700; // Set word at offset in VRAM
+    while (MARS_SYS_COMM0) ;
+}
+
+void HwMdPuts(char *str, int color, int x, int y)
+{
+    HwMdSetOffset(((y<<6) | x) << 1);
+    while (*str)
+        HwMdSetNTable(((*str++ - 0x20) & 0xFF) | color);
+}
+
+void HwMdPutc(char chr, int color, int x, int y)
+{
+    HwMdSetOffset(((y<<6) | x) << 1);
+    HwMdSetNTable(((chr - 0x20) & 0xFF) | color);
+}
+
+
+// Slave SH2 support code ----------------------------------------------
+
+void slave(void)
+{
+    while (1) ;
+}