| #include <stdio.h> |
| #include <stdlib.h> |
| #include "miscemu.h" |
| #include "stddebug.h" |
| /* #define DEBUG_INT */ |
| #include "debug.h" |
| |
| |
| /********************************************************************** |
| * INT_Int13Handler |
| * |
| * Handler for int 13h (disk I/O). |
| */ |
| void INT_Int13Handler( SIGCONTEXT *context ) |
| { |
| switch(AH_reg(context)) |
| { |
| case 0x00: /* RESET DISK SYSTEM */ |
| case 0x04: /* VERIFY DISK SECTOR(S) */ |
| AH_reg(context) = 0; |
| break; |
| |
| case 0x05: /* FORMAT TRACK */ |
| AH_reg(context) = 0x0c; |
| SET_CFLAG(context); |
| break; |
| |
| case 0x06: /* FORMAT TRACK AND SET BAD SECTOR FLAGS */ |
| case 0x07: /* FORMAT DRIVE STARTING AT GIVEN TRACK */ |
| AH_reg(context) = 0x0c; |
| break; |
| |
| case 0x08: /* GET DRIVE PARAMETERS */ |
| AH_reg(context) = (DL_reg(context) & 0x80) ? 0x07 : 0x01; |
| SET_CFLAG(context); |
| break; |
| |
| case 0x09: /* INITIALIZE CONTROLLER WITH DRIVE PARAMETERS */ |
| case 0x0c: /* SEEK TO CYLINDER */ |
| case 0x0d: /* RESET HARD DISKS */ |
| case 0x10: /* CHECK IF DRIVE READY */ |
| case 0x11: /* RECALIBRATE DRIVE */ |
| case 0x14: /* CONTROLLER INTERNAL DIAGNOSTIC */ |
| AH_reg(context) = 0; |
| break; |
| |
| case 0x0e: /* READ SECTOR BUFFER (XT only) */ |
| case 0x0f: /* WRITE SECTOR BUFFER (XT only) */ |
| case 0x12: /* CONTROLLER RAM DIAGNOSTIC (XT,PS) */ |
| case 0x13: /* DRIVE DIAGNOSTIC (XT,PS) */ |
| AH_reg(context) = 0x01; |
| SET_CFLAG(context); |
| break; |
| |
| default: |
| INT_BARF( context, 0x13 ); |
| } |
| } |