hexed: vram transfer + early pc transfers

[megadrive.git] / hexed / pc_transfer.c

diff --git a/hexed/pc_transfer.c b/hexed/pc_transfer.c
index ef1f58b..bcfb652 100644 (file)
--- a/hexed/pc_transfer.c
+++ b/hexed/pc_transfer.c
@@ -193,7 +193,8 @@ static void usage(const char *argv0)
                "\trecv <file> <addr> <size>\n"
                "\tjump <addr>\n"
                "\tio {r{8,16,32} <addr>,w{8,16,32} <addr> <data>}*\n"
-               "\tloadstate <picodrive_savestate>\n", argv0);
+               "\tloadstate <picodrive_savestate>\n"
+               "\trecvvram <file>\n", argv0);
        exit(1);
 }
 
@@ -404,6 +405,20 @@ int main(int argc, char *argv[])
                        data[i + 1] = tmp;
                }
        }
+       else if (strcmp(argv[1], "recvvram") == 0)
+       {
+               if (argc != 3)
+                       usage(argv[0]);
+
+               file = fopen(argv[2], "wb");
+               if (file == NULL) {
+                       fprintf(stderr, "can't open file: %s\n", argv[2]);
+                       return 1;
+               }
+
+               size = 0x10000;
+               memset(data, 0, size);
+       }
        else
                usage(argv[0]);
 
@@ -417,18 +432,29 @@ int main(int argc, char *argv[])
 
        printf("regs: %02x %02x %02x\n",
                inb(PORT_DATA), inb(PORT_STATUS), inb(PORT_CONTROL));
+
+       /* wait for start condition */
+       if (!(inb(PORT_STATUS) & 0x40))
+               printf("waiting for TH high..\n");
+       while (!(inb(PORT_STATUS) & 0x40))
+               usleep(10000);
+
        outb(0xe8, PORT_CONTROL);       /* TR low - request for transfer */
 
+       /* wait for request ack */
        if (inb(PORT_STATUS) & 0x40)
                printf("waiting for TH low..\n");
-       while (inb(PORT_STATUS) & 0x40)
-               usleep(100000);
+       for (i = 10000; inb(PORT_STATUS) & 0x40; i += 100) {
+               if (i > 100000)
+                       i = 100000;
+               usleep(i);
+       }
 
        outb(0xe0, PORT_CONTROL);
 
        if (strcmp(argv[1], "send") == 0)
        {
-               send_cmd(CMD_MD_SEND);
+               send_cmd(CMD_PC_SEND);
                send_byte((addr >> 16) & 0xff);
                send_byte((addr >>  8) & 0xff);
                send_byte((addr >>  0) & 0xff);
@@ -449,7 +475,7 @@ int main(int argc, char *argv[])
        }
        else if (strcmp(argv[1], "recv") == 0)
        {
-               send_cmd(CMD_MD_RECV);
+               send_cmd(CMD_PC_RECV);
                send_byte((addr >> 16) & 0xff);
                send_byte((addr >>  8) & 0xff);
                send_byte((addr >>  0) & 0xff);
@@ -545,6 +571,24 @@ int main(int argc, char *argv[])
                        send_byte(data[i]);
                }
        }
+       else if (strcmp(argv[1], "recvvram") == 0)
+       {
+               send_cmd(CMD_VRAM_RECV);
+               output_to_input();
+
+               for (i = 0; i < size; i++)
+               {
+                       if ((i & 0xff) == 0) {
+                               printf("\b\b\b\b\b\b\b\b\b\b\b\b\b");
+                               printf("%06x/%06x", i, size);
+                               fflush(stdout);
+                       }
+
+                       data[i] = recv_byte();
+               }
+
+               fwrite(data, 1, size, file);
+       }
 
        if (size != 0) {
                printf("\b\b\b\b\b\b\b\b\b\b\b\b\b");