Another major cleanup - folders for cdrom and floppy, renamed disc to floppy, renamed SuperIO stuff, others as needed.

2017-09-04 01:52:29 -04:00
parent 0ef876ef36
commit 73ef17be9e
99 changed files with 2546 additions and 2068 deletions
--- a/src/nvr_ps2.c
+++ b/src/nvr_ps2.c
@@ -0,0 +1,104 @@
+#include <stdlib.h>
+#include "ibm.h"
+#include "device.h"
+#include "io.h"
+#include "mem.h"
+#include "rom.h"
+#include "nvr_ps2.h"
+
+
+typedef struct ps2_nvr_t
+{
+        int addr;
+        uint8_t ram[8192];
+} ps2_nvr_t;
+
+
+static uint8_t ps2_nvr_read(uint16_t port, void *p)
+{
+        ps2_nvr_t *nvr = (ps2_nvr_t *)p;
+        
+        switch (port)
+        {
+                case 0x74:
+                return nvr->addr & 0xff;
+                case 0x75:
+                return nvr->addr >> 8;
+                case 0x76:
+                return nvr->ram[nvr->addr];
+        }
+        
+        return 0xff;
+}
+
+static void ps2_nvr_write(uint16_t port, uint8_t val, void *p)
+{
+        ps2_nvr_t *nvr = (ps2_nvr_t *)p;
+        
+        switch (port)
+        {
+                case 0x74:
+                nvr->addr = (nvr->addr & 0x1f00) | val;
+                break;
+                case 0x75:
+                nvr->addr = (nvr->addr & 0xff) | ((val & 0x1f) << 8);
+                break;
+                case 0x76:
+                nvr->ram[nvr->addr] = val;
+                break;
+        }
+}
+
+static void *ps2_nvr_init()
+{
+        ps2_nvr_t *nvr = (ps2_nvr_t *)malloc(sizeof(ps2_nvr_t));
+        FILE *f = NULL;
+
+        memset(nvr, 0, sizeof(ps2_nvr_t));
+        
+        io_sethandler(0x0074, 0x0003, ps2_nvr_read, NULL, NULL, ps2_nvr_write, NULL, NULL, nvr);
+
+        switch (romset)
+        {
+                case ROM_IBMPS2_M80:  f = nvrfopen(L"ibmps2_m80_sec.nvr", L"rb"); break;
+        }
+        if (f)
+        {
+                fread(nvr->ram, 8192, 1, f);
+                fclose(f);
+        }
+        else
+                memset(nvr->ram, 0xFF, 8192);
+        
+        return nvr;
+}
+
+static void ps2_nvr_close(void *p)
+{
+        ps2_nvr_t *nvr = (ps2_nvr_t *)p;
+        FILE *f = NULL;
+
+        switch (romset)
+        {
+                case ROM_IBMPS2_M80:  f = nvrfopen(L"ibmps2_m80_sec.nvr", L"wb"); break;
+        }
+        if (f)
+        {
+                fwrite(nvr->ram, 8192, 1, f);
+                fclose(f);
+        }
+        
+        free(nvr);
+}
+
+device_t ps2_nvr_device =
+{
+        "PS/2 NVRRAM",
+        0,
+        ps2_nvr_init,
+        ps2_nvr_close,
+        NULL,
+        NULL,
+        NULL,
+        NULL
+};