INT 2F - CS_TSR specification - GET HANDLE (TSR-SPECIFIC INSTALLATION CHECK)
	AX = 8001h
	DS:SI -> ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. signature string for desired TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user.  The name comes from the name of the DOS function call used to remain in memory after termination. (see #02929)
Return: BX = process handle or 0000h if specified TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user.  The name comes from the name of the DOS function call used to remain in memory after termination. not installed
	ES:DI -> process block for TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user.  The name comes from the name of the DOS function call used to remain in memory after termination. (see #02928) if BX<>0000h
Note:	A widely-available copy of ASCII billing itself as "ASCII 2.OO by
	  Nick Zaikin JrIBM PCjr." is in fact a hacked copy of the Compact Soft
	  ASCII v4.23 which is identical except for the changed attribution
	  and version (in fact, some instances of "4.23" were missed); the
	  hacked copy requires the signature string
	  "ASCII 2.OO by Nick Zaikin JrIBM PCjr." instead of the unhacked version's
	  simple signature "ASCII"
SeeAlso: AX=8000h"CS_TSR",AX=8002h"CS_TSR"


(Table 02929)
Values for CS_TSR signature strings:
 "ASCII"	ASCII, a popup ASCII table with character input
 "Halculator"	HALC, a 32-bit RPN WYSIWIH calculator with undo and ptr support
 "AntiTurbo"	ATIBM PC AT!, an intelligent system slow-down utility