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Int 0C - IBM System 36/38 Workstation Emulation - API Pointer [I]
Desc: the IBM System 36/38 emulator may be invoked through a private API,
whose entry point address is offset 100h in the segment pointed at
by this vector
Call the API entry point with
AH = function
03h update screen
05h select next session
AL = session number (00h-03h)
Return: AL = session type code
00h not active
01h display session
02h printer session
FEh invalid session number
DS = requested session's data segment (0 if not active)
Return: ???
Format of emulator's data area (offset from interrupt handler's segment):
Offset Size Description
13Eh BYTE bit flags for status line indicators turned on since this byte
last zerod
13Fh BYTE bit flags for status line indicators turned off since this
byte last set to FFh
140h WORD offset of EBCDIC to ASCII translation
146h WORD offset of EBCDIC screen buffer
148h WORD offset of EC (engineering change) level signature
150h BYTE "KEYI"
151h BYTE 5250 key scan code to be sent to remote
15Bh BYTE "SYSAV"
15Dh BYTE 5250 cursor column
15Eh BYTE 5250 cursor row
167h BYTE "DVCTAD"
178h BYTE "FLAGS"
184h BYTE "SESSNOAD"
193h BYTE "STNAD"
198h BYTE "NSDS"
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