Index for category u - emulators,

Table of Contents by Order
214321BX0000 - INT 21 - Q87, Q387 - INSTALLATION CHECK
214321BX0001 - INT 21 - Q87, Q387 - ENABLE EMULATOR
214321BX0002 - INT 21 - Q87, Q387 - DISABLE EMULATOR
60 - INT 60 U - PC/370 v4.2 - ???
672833 - INT 67 - Q87 v4+ - PREPARE TO UNLOAD AND GET XMS HANDLE FOR Q87 MEMORY
674321 - INT 67 - Q87 v4+ - INSTALLATION CHECK
DC - INT DC - PC/370 v4.1- - API

INT 21 - Q87, Q387 - INSTALLATION CHECK
	AX = 4321h
	BX = 0000h
	EAX = 87654321h (entire EAX value is required, not just AX)
Return: EAX = 12345678h if installed
Program: Q387 (renamed to Q87 as of v3.7) is a math coprocessor emulator from
	  Quickware
Note:	this function is available only in virtual-86 mode in older versions;
	  newer versions also provide it in MS Windows 16- and 32-bit protected
	  mode
SeeAlso: AX=4321h/BX=0001h,AX=4321h/BX=0002h,INT 67/AX=4321h

INT 21 - Q87, Q387 - ENABLE EMULATOR
	AX = 4321h
	BX = 0001h
	EAX = 87654321h (entire EAX value is required, not just AX)
Desc:	enable the emulator by setting the CPU MSW's EM bit and updating
	  the BIOS equipment list
Note:	this function is available only in virtual-86 mode in older versions;
	  newer versions also provide it in MS Windows 16- and 32-bit protected
	  mode
SeeAlso: AX=4321h/BX=0000h,AX=4321h/BX=0002h

INT 21 - Q87, Q387 - DISABLE EMULATOR
	AX = 4321h
	BX = 0002h
	EAX = 87654321h (entire EAX value is required, not just AX)
Desc:	disable the emulator by clearing the CPU MSW's EM bit and updating
	  the BIOS equipment list
Note:	this function is available only in virtual-86 mode in older versions;
	  newer versions also provide it in MS Windows 16- and 32-bit protected
	  mode
SeeAlso: AX=4321h/BX=0000h,AX=4321h/BX=0001h

INT 60 U - PC/370 v4.2 - ???
	???
Return: ???
Program: PC/370 is an IBM 370 emulator by Donald S. Higgins
Range:	INT 00 to INT FF, selected by patching the executable
Note:	the documentation includes instructions for patching the system for
	  another interrupt
SeeAlso: INT 2F/AX=7F24h,INT DC"PC/370"

INT 67 - Q87 v4+ - PREPARE TO UNLOAD AND GET XMS HANDLE FOR Q87 MEMORY
	AX = 2833h
	EAX = 29482833h (entire EAX value required)
Return: EAX = XMS handle for memory allocated when Q87 was installed
	EBX = status
	    00000000h Q87 is in demo mode (countdown running);
			  Q87 remains active
	    00000001h Q87 is in registered mode; memory manager's IDT, GDT,
			  and optionally CR0 (if BL <> 5Fh on entry) have
			  been restored
	    00000002h Q87 is in demo mode (demo time has expired);
			  Q87 remains active
Note:	this call is used by UNLOAD87 to release the memory used by Q87
BUG:	v4.00-v4.03 will hang on most machines when run under bare DOS with
	  no memory manager, because neither Q87 nor UNLOAD87 checks whether
	  there is a valid INT 67 handler before performing an installation
	  check via INT 67
SeeAlso: AX=4321h,INT 21/AX=4321h/BX=0000h

INT 67 - Q87 v4+ - INSTALLATION CHECK
	AX = 4321h
	EAX = 87654321h (entire EAX value required)
Return: EAX = 12345678h if Q87 is installed
Note:	this call requires that VCPI services be available; if they are not,
	  this call will not be recognized
BUG:	v4.00-v4.03 will hang on most machines when run under bare DOS with
	  no memory manager, because neither Q87 nor UNLOAD87 checks whether
	  there is a valid INT 67 handler before performing an installation
	  check via INT 67
SeeAlso: AX=2833h,INT 21/AX=4321h

INT DC - PC/370 v4.1- - API
SeeAlso: INT 60"PC/370"