Add v0.7 source

2013-04-21 14:54:35 +01:00 · 2013-04-21 14:54:35 +01:00 · 3c253c2cf8
commit 3c253c2cf8
188 changed files with 52566 additions and 0 deletions
--- a/src/vid_pc200.c
+++ b/src/vid_pc200.c
@ -0,0 +1,102 @@
+/*PC200 video emulation.
+  CGA with some NMI stuff. But we don't need that as it's only used for TV and
+  LCD displays, and we're emulating a CRT*/
+#include "ibm.h"
+#include "video.h"
+#include "vid_cga.h"
+
+uint8_t pc200_3dd, pc200_3de, pc200_3df;
+
+void pc200_out(uint16_t addr, uint8_t val)
+{
+        uint8_t old;
+        switch (addr)
+        {
+                case 0x3D5:
+                if (!(pc200_3de&0x40) && crtcreg<=11)
+                {
+                        if (pc200_3de&0x80) nmi=1;
+                        pc200_3dd=0x20|(crtcreg&0x1F);
+                        pc200_3df=val;
+                        return;
+                }
+                old=crtc[crtcreg];
+                crtc[crtcreg]=val&crtcmask[crtcreg];
+                if (old!=val)
+                {
+                        if (crtcreg<0xE || crtcreg>0x10)
+                        {
+                                fullchange=changeframecount;
+                                cga_recalctimings();
+                        }
+                }
+                return;
+                
+                case 0x3D8:
+                old = cgamode;
+                cgamode=val;
+                if ((cgamode ^ old) & 3)
+                   cga_recalctimings();
+                pc200_3dd|=0x80;
+                if (pc200_3de&0x80)
+                   nmi=1;
+                return;
+                
+                case 0x3DE:
+                pc200_3de=val;
+                pc200_3dd=0x1F;
+                if (val&0x80) pc200_3dd|=0x40;
+                return;
+        }
+        cga_out(addr,val);
+}
+
+uint8_t pc200_in(uint16_t addr)
+{
+        uint8_t temp;
+        switch (addr)
+        {
+                case 0x3D8:
+                return cgamode;
+                
+                case 0x3DD:
+                temp = pc200_3dd;
+                pc200_3dd &= 0x1F;
+                return temp;
+                
+                case 0x3DE:
+                return (pc200_3de&0xC7)| 0x18; /*External CGA*/
+                
+                case 0x3DF:
+                return pc200_3df;
+        }
+        return cga_in(addr);
+}
+
+int pc200_init()
+{
+        mem_sethandler(0xb8000, 0x08000, cga_read, NULL, NULL, cga_write, NULL, NULL);
+        return cga_init();
+}
+
+GFXCARD vid_pc200 =
+{
+        pc200_init,
+        /*IO at 3Cx/3Dx*/
+        pc200_out,
+        pc200_in,
+        /*IO at 3Ax/3Bx*/
+        video_out_null,
+        video_in_null,
+
+        cga_poll,
+        cga_recalctimings,
+
+        video_write_null,
+        video_write_null,
+        cga_write,
+
+        video_read_null,
+        video_read_null,
+        cga_read
+};