--- /dev/null
+#include <stdio.h>
+
+typedef struct
+{
+ unsigned int addr_min, addr_max;
+ int r8, r16, r32, w8, w16, w32;
+} io_log_location;
+
+static io_log_location io_locations[] =
+{
+ { 0x400000, 0x9FFFFF, 0, }, // unused
+ { 0xa00000, 0xa03fff, 0, }, // z80 RAM
+ { 0xa04000, 0xa05fff, 0, }, // ym2612
+ { 0xa06000, 0xa060ff, 0, }, // bank reg
+ { 0xa06100, 0xa07eff, 0, }, // unused
+ { 0xa07f00, 0xa07fff, 0, }, // vdp
+ { 0xa08000, 0xa0ffff, 0, }, // 0xa00000-0xa07fff mirror
+ { 0xa10000, 0xa1001f, 0, }, // i/o
+ { 0xa10020, 0xa10fff, 0, }, // expansion
+ { 0xa11000, 0xa110ff, 0, }, // expansion
+ { 0xa11100, 0xa11101, 0, }, // z80 busreq
+ { 0xa11102, 0xa111ff, 0, }, // expansion
+ { 0xa11200, 0xa11201, 0, }, // z80 reset
+ { 0xa11202, 0xbfffff, 0, }, // expansion
+ { 0xc00000, 0xc00003, 0, }, // vdp data port
+ { 0xc00004, 0xc00007, 0, }, // vdp control
+ { 0xc00009, 0xc0000f, 0, }, // hv counter
+ { 0xc00010, 0xc00017, 0, }, // PSG
+ { 0xc00018, 0xc0001f, 0, }, // unused
+ { 0xc00020, 0xdfffff, 0, } // vdp mirrors
+};
+
+
+void log_io(unsigned int a, int bits, int is_write)
+{
+ int i;
+ a &= 0x00ffffff;
+ if (bits > 8) a&=~1;
+
+ for (i = 0; i < sizeof(io_locations)/sizeof(io_locations[0]); i++)
+ {
+ if (a >= io_locations[i].addr_min && a <= io_locations[i].addr_max)
+ {
+ switch (bits|(is_write<<8)) {
+ case 0x008: io_locations[i].r8 ++; break;
+ case 0x010: io_locations[i].r16++; break;
+ case 0x020: io_locations[i].r32++; break;
+ case 0x108: io_locations[i].w8 ++; break;
+ case 0x110: io_locations[i].w16++; break;
+ case 0x120: io_locations[i].w32++; break;
+ default: printf("%06x %i %i\n", a, bits, is_write); break;
+ }
+ }
+ }
+}
+
+void log_io_clear(void)
+{
+ int i;
+ for (i = 0; i < sizeof(io_locations)/sizeof(io_locations[0]); i++)
+ {
+ io_log_location *iol = &io_locations[i];
+ iol->r8 = iol->r16 = iol->r32 = iol->w8 = iol->w16 = iol->w32 = 0;
+ }
+}
+
+void log_io_dump(void)
+{
+ int i;
+ printf(" range : r8 r16 r32 w8 w16 w32\n");
+ for (i = 0; i < sizeof(io_locations)/sizeof(io_locations[0]); i++)
+ {
+ io_log_location *iol = &io_locations[i];
+ if (iol->r8 == 0 && iol->r16 == 0 && iol->r32 == 0 && iol->w8 == 0 && iol->w16 == 0 && iol->w32 == 0)
+ continue;
+ printf("%06x - %06x : %8i %8i %8i %8i %8i %8i\n", iol->addr_min, iol->addr_max,
+ iol->r8, iol->r16, iol->r32, iol->w8, iol->w16, iol->w32);
+ }
+ printf("\n");
+}
+