comment ^
;##/*****************************************************************************************************************************
;*																																*
;*						INTERRUPT HANDLERS																						*
;*																																*
;##\*****************************************************************************************************************************
	;********************************************************************************************************************************
	;*																																*
	;*						>	EXCEPTION HANDLERS																					*
	;*																																*
	;##\*****************************************************************************************************************************
IntDivError				proc
	mov		eax,[esp][4]
	TestOutputVar	"Divide Error at ",eax
	jmp		$
;	mov		edi,pLocalAPIC
;	xor		eax,eax
;	mov		[edi].EndOfIntReg,eax
;	iretd
IntDivError				endp

IntInvalidOpcode		proc
	mov		eax,[esp][4]
	TestOutputVar	"Invalid Opcode Ex at ",eax
	jmp		$
;	mov		edi,pLocalAPIC
;	xor		eax,eax
;	mov		[edi].EndOfIntReg,eax
;	iretd
IntInvalidOpcode		endp

IntDeviceNotAvailable	proc	;occurs on 1st FPU/MMX/SSE instruction after a task switch (could be used for saving previous state and/or loading state for this program)
	push	eax
	push	edi
IF TESTING_MODE
	mov		eax,[esp][4]
	TestOutputVar	"Device Not Available Ex at ",eax
ENDIF
	clts						;clear TS flag in CR0, so it doesn't happen again for this switch
	mov		edi,pLocalAPIC
ASSUME EDI:PTR LOCALAPICMEM
	xor		eax,eax
	mov		[edi].EndOfIntReg,eax
	pop		edi
	pop		eax
	iretd
ASSUME EDI:NOTHING
IntDeviceNotAvailable	endp

IntDoubleFault			proc
	mov		eax,[esp][4]
	TestOutputVar	"Double-Fault Exception at ",eax
	jmp		$
;	mov		edi,pLocalAPIC
;	xor		eax,eax
;	mov		[edi].EndOfIntReg,eax
;	iretd
IntDoubleFault			endp

IntInvalidTSS			proc
	mov		eax,[esp][4]
	TestOutputVar	"Invalid TSS Ex at ",eax
	jmp		$
;	mov		edi,pLocalAPIC
;	xor		eax,eax
;	mov		[edi].EndOfIntReg,eax
;	iretd
IntInvalidTSS			endp

IntSegmentNotPresent	proc
	mov		eax,[esp][4]
	TestOutputVar	"Seg Not Present Ex at ",eax
	jmp		$
;	mov		edi,pLocalAPIC
;	xor		eax,eax
;	mov		[edi].EndOfIntReg,eax
;	iretd
IntSegmentNotPresent	endp

IntStackFault			proc
	mov		eax,[esp][4]
	TestOutputVar	"Stack Fault at ",eax
	jmp		$
;	mov		edi,pLocalAPIC
;	xor		eax,eax
;	mov		[edi].EndOfIntReg,eax
;	iretd
IntStackFault			endp

IntProtectionFault		proc
	mov		eax,[esp][4]
	TestOutputVar	"Protection Fault at ",eax
	mov		eax,[esp][0]
	TestOutputVar	"    error code: ",eax
	jmp		$
;	mov		edi,pLocalAPIC
;	xor		eax,eax
;	mov		[edi].EndOfIntReg,eax
;	iretd
IntProtectionFault		endp

IntPageFault			proc
	mov		eax,[esp][4]
	TestOutputVar	"Page Fault at ",eax
	mov		eax,CR2
	TestOutputVar	"    access address: ",eax
	jmp		$
;	mov		edi,pLocalAPIC			;this part will be needed in valid page fault handler for after boot
;	xor		eax,eax					;
;	mov		[edi].EndOfIntReg,eax	;
;	iretd							;
IntPageFault			endp

IntMachineCheckEx		proc
	mov		eax,[esp][4]
	TestOutputVar	"Machine Check Ex at ",eax
	jmp		$
;	mov		edi,pLocalAPIC
;	xor		eax,eax
;	mov		[edi].EndOfIntReg,eax
;	iretd
IntMachineCheckEx		endp

IntSIMDException		proc
	mov		eax,[esp][4]
	TestOutputVar	"SIMD Fl-Pt Ex at ",eax
	jmp		$
;	mov		edi,pLocalAPIC
;	xor		eax,eax
;	mov		[edi].EndOfIntReg,eax
;	iretd
IntSIMDException		endp

IntOtherError			proc
	mov		eax,[esp][4]
	TestOutputVar	"Unknown Exception at ",eax
	jmp		$
;	mov		edi,pLocalAPIC
;	xor		eax,eax
;	mov		[edi].EndOfIntReg,eax
;	iretd
IntOtherError			endp
	;##/
;##/
^

comment ^
;*&; 0016A0D0 <00 WaitIOStart(eax=DeviceNum)
;*&; 0016CBE0 >05 Should work for MP
WaitIOStart		proc
	push	eax
	push	ecx
	push	edx
	mov		edx,eax
	GetThreadInfoOffset
ASSUME ECX:PTR THREADHANDLEINFO
	GetSystemAccess
	lock	bts	DeviceUseFlags,edx
	jc		DeviceBusy
	shl		edx,16
	add		edx,INST_STAT_IOUSE
CommonReturn:
	mov		eax,CurMillisecCount
	and		[ecx][LOFFSET_HANDLE_INFO].Status,INST_STAT_CRITSEC_BIT
	or		[ecx][LOFFSET_HANDLE_INFO].Status,edx
	mov		[ecx][LOFFSET_HANDLE_INFO].StatusTime,eax
	ReleaseSystemAccess
	sti
	pop		edx
	pop		ecx
	pop		eax
	ret
DeviceBusy:
	shl		edx,16
	add		edx,INST_STAT_IOWAIT
	mov		eax,CurMillisecCount
	and		[ecx][LOFFSET_HANDLE_INFO].Status,INST_STAT_CRITSEC_BIT
	or		[ecx][LOFFSET_HANDLE_INFO].Status,edx
	mov		[ecx][LOFFSET_HANDLE_INFO].StatusTime,eax
	mov		eax,pSystemTSS
ASSUME EAX:PTR NEILDOWSTSS
	mov		[eax].MainTSS.rEIP,offset MainProcessRouter
	call	far ptr SYSTEM_TASK_SELECTOR:00000000h	;will return via the saved EIP value
	add		edx,INST_STAT_IOUSE-INST_STAT_IOWAIT
	jmp		CommonReturn							;and only once allowed the requested device
ASSUME EAX:NOTHING
ASSUME ECX:NOTHING
WaitIOStart		endp

;*&; 0016EDF0 <00 WaitIOEnd
;*&; 0016EEF0 >05 Doesn't change status after system task, 'cause IOInts must (or IOProcessRouter)
;*&; 0016EFD0 05 IOProcessRouter must clear device busy bit when all tasks done
;*&; 0016FEF8 05 Should work for MP
WaitIOEnd	proc
	push	eax
	push	ecx
	GetThreadInfoOffset
ASSUME ECX:PTR THREADHANDLEINFO
	GetSystemAccess
	cmp		word ptr [ecx][LOFFSET_HANDLE_INFO].Status,INST_STAT_IOUSE
	jne		DoneIOWait
	mov		eax,pSystemTSS
ASSUME EAX:PTR NEILDOWSTSS
	mov		[eax].MainTSS.rEIP,offset MainProcessRouter
	call	far ptr SYSTEM_TASK_SELECTOR:00000000h	;will return via the saved EIP value
DoneIOWait:
	ReleaseSystemAccess
	sti
	pop		ecx
	pop		eax
	ret
WaitIOEnd	endp
^