diff options
Diffstat (limited to 'src/loader.c')
| -rw-r--r-- | src/loader.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/loader.c b/src/loader.c index 1d8225f..7c6c839 100644 --- a/src/loader.c +++ b/src/loader.c @@ -666,6 +666,20 @@ uint16_t create_PSP(const char *cmdline, const char *environment, int env_size, dosPSP[7] = 0xFE; // this jumps to 0xC0, where an dosPSP[8] = 0x1D; // INT 21h is patched. dosPSP[9] = 0xF0; + dosPSP[10] = 0x22; // Handler for INT 22h + dosPSP[11] = 0x00; + dosPSP[12] = 0x00; + dosPSP[13] = 0x00; + dosPSP[14] = 0x23; // Handler for INT 23h + dosPSP[15] = 0x00; + dosPSP[16] = 0x00; + dosPSP[17] = 0x00; + dosPSP[18] = 0x24; // Handler for INT 24h + dosPSP[19] = 0x00; + dosPSP[20] = 0x00; + dosPSP[21] = 0x00; + dosPSP[22] = 0xFE; // 16: Parent PSP, use special value of FFFE + dosPSP[23] = 0xFF; // to signal no parent DOS process dosPSP[44] = 0xFF & env_seg; // 2C: environment segment dosPSP[45] = 0xFF & (env_seg >> 8); // dosPSP[80] = 0xCD; // 50: INT 21h / RETF @@ -698,6 +712,11 @@ unsigned get_current_PSP(void) return current_PSP; } +void set_current_PSP(unsigned psp_seg) +{ + current_PSP = psp_seg; +} + static int g16(uint8_t *buf) { return buf[0] + (buf[1] << 8); |