Curtis AR-B1682 operation manual I/O & Memory MAP, Memory Map

B-4. I/O & MEMORY MAP

Memory Map :

MEMORY MAP	ASSIGNMENT
0000000-	System memory used by DOS
009FFFF	and application
00A0000-	Display buffer memory for VGA/
00BFFFF	EGA / CGA / MONOCHROME
	adapter
00C0000-	Reserved for I/O device BIOS
00DFFFF	ROM or RAM buffer.
00E0000-	Reserved for PCI device ROM
00EFFFF
00F0000-	System BIOS ROM
00FFFFF
0100000-	System extension memory
FFFFFFF

I/O Map :

I/O MAP	ASSIGNMENT
000-01F	DMA controller (Master)
020-021	Interrupt controller (Master)
022-023	Chipset	controller registers I/O
	ports.
040-05F	Timer control registers.
060-06F	Keyboard	interface controller
	(8042)
070-07F	RTC ports & CMOS I/O ports
080-09F	DMA register
0A0-0BF	Interrupt controller (Slave)
0C0-0DF	DMA controller (Slave)
0F0-0FF	Math coprocessor
1F0-1F8	Hard Disk controller
278-27F	Parallel port-2
2B0-2DF	Graphics adapter controller
2F8-2FF	Serial port-2
360-36F	Net work ports
378-37F	Parallel port-1
3B0-3BF	Monochrome & Printer adapter
3C0-3CF	EGA adapter
3D0-3DF	CGA adapter
3F0-3F7	Floppy disk controller
3F8-3FF	Serial port-1

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