Int 60

INTRSPY/CMDSPY v1.0 only - API

Program: INTRSPY is a script-driven debugger included with the book _Undocumented_DOS_.

InstallCheck:
Determine that a) the handler is an IRET instruction, and b) the signature 0Dh "INTRSPY vN.NN" immediately precedes the handler

Notes: INTRSPY will hook the first available interrupt in the range 60h-67h.. If INTRSPY is installed, the DWORD immediately after the IRET stores its entry point (see #03275). INTRSPY v2.0 (included with the second edition of the book) no longer supports this API

Index:
Installation check;INTRSPY


(Table 03275)
Call INTRSPY v1.0 entry point with:.
AH = function
00h ???
01h set current directory (for use in reporting)
ES:DI -> counted string containing directory name (max 79 char)
02h set name of script file
ES:DI -> counted string containing file name (max 79 chars)
03h set script arguments
ES:DI -> counted string containing arguments (max 79 chars)
04h get directory set with function 01h
ES:DI -> 80-byte buffer for directory name
05h get name of script file
ES:DI -> 80-byte buffer for script filename
06h get script arguments
ES:DI -> 80-byte buffer for script arguments
07h get ???
CL = 00h-15h specifies what to get
ES:DI -> WORD to be set with desired value on return
08h get ???
ES:DI -> WORD to be set with returned value
09h get ???
ES:DI -> WORD to be set with returned value
0Bh store code for interrupt handler???
ES:DI -> data
CX = number of bytes
0Ch ???
ES:DI -> ???
0Dh get ???
ES:DI -> BYTE to be set with returned value
0Eh set ??? flag
0Fh clear ??? flag
10h ???
Return:
AL = 04h or 05h if failed
11h ???
Return:
AL = 05h if failed
12h get ???
ES:DI -> buffer
Return:
CX = number of bytes returned in buffer
13h ???

Return:
AH = 00h
AL = status
00h successful
01h invalid function
02h ???
03h ???
04h ???
05h ???

Category: Debuggers/Debugging Tools - Int 60h - I

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