| 21,10 → 21,7 |
|---|
| SIG3 dw 0x2017 ; +4 |
| SIG4 dw 0x2019 ; +6 |
| |
| ; offset where a program name to be executed is awaiting (0=none) |
| ; this is set by SvarCOM, after it presets the ExecParamRec struct and |
| ; stores the command to be executed somewhere within rmod's segment. |
| EXECPROG dw 0 ; +8 |
| FFU_UNUSED dw 0 ; +8 |
| |
| ; exit code of last application |
| LEXCODE dw 0 ; +0Ah |
| 45,8 → 42,11 |
|---|
| ; +0Ah 4 address of an FCB to be placed at PSP:006c |
| EXEC_PARAM_REC db 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ; +1Dh |
| |
| skipsig: ; +2Bh |
| ; Program to execute, preset by SvarCOM (128 bytes, ASCIIZ) ; +2Bh |
| EXECPROG dd 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 |
| |
| skipsig: ; +ABh |
| |
| ; set up CS=DS=SS and point SP to my private stack buffer |
| mov ax, cs |
| mov ds, ax |
| 58,14 → 58,18 |
|---|
| or [EXECPROG], byte 0 |
| jz EXEC_COMMAND_COM |
| |
| ; TODO: most probably I should call the DOS SetPSP function here |
| ; TODO: perhaps I should call the DOS SetPSP function here? But if I do, the |
| ; int 21h, ah=50h call freezes... |
| ;mov ah, 0x50 ; DOS 2+ -- Set PSP |
| ;mov bx, cs |
| ;int 0x21 |
| |
| ; exec an application preset (by SvarCOM) in the ExecParamRec |
| mov [EXECPROG], byte 0 ; make sure to spawn command.com after app exits |
| mov ax, 0x4B00 ; DOS 2+ - load & execute program |
| mov dx, [EXECPROG] ; DS:DX - ASCIZ program name (preset at PSP[already) |
| mov dx, EXECPROG ; DS:DX - ASCIZ program name (preset at PSP[already) |
| mov bx, EXEC_PARAM_REC ; ES:BX - parameter block pointer |
| int 0x21 |
| mov [EXECPROG], byte 0 ; make sure to spawn command.com after app exits |
| |
| EXEC_COMMAND_COM: |
| |