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AX = 0009h DX:EBX = new value for passalong address (see #02558)
Return:
CF clear
Notes: When an INT 2C instruction is executed in V86 mode, the Cloaking host calls the passalong address. The handler should check whether the upcall is of interest to it, and if not it should jump to the old passalong address (retrieved with AX=0008h before the handler was installed). The final handler should return with CF clear to cause the interrupt to be reflected back to V86 mode if none of the passalong handlers is triggered. This function was first introduced with RM386 (RAM-MAN/386) v6.00
See Also: AX=0008h - AX=002Dh - INT 2C"PASSALONG CHAIN"
(Table 02558) Values Cloaking passalong address is called with:. EAX = CS:IP of byte following INT 2C instruction invoking passalong. SS:EBX -> caller registers (see #02559). CF clear. Others undefined
Return:
CF clear: pass along to V86-mode INT 2C handler.CF set:
Return immediately to V86 modeFormat of Cloaking caller registers: Offset Size Description (Table 02559) 00h DWORD EDI 04h DWORD ESI 08h DWORD EBP 0Ch DWORD reserved (ESP from PUSHAD instruction) 10h DWORD EBX 14h DWORD EDX 18h DWORD ECX 1Ch DWORD EAX 20h DWORD error code 24h DWORD EIP 28h WORD CS 2Ah WORD padding 2Ch DWORD EFLAGS 30h DWORD ESP 34h WORD SS 36h WORD padding --remainder not available if protected-mode ring3 trap--- 38h WORD ES 3Ah WORD padding 3Ch WORD DS 3Eh WORD padding 40h WORD FS 42h WORD padding 44h WORD GS 46h WORD padding
Category: Memory Management - Int 2Ch - C
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