Specifications

MSM800XEV/XEL / Detailed System Description
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I/O Address Function Size R/W Comment
0CDh No specific usage 8bit ---
0CEh Master DMA Counter - Channel 7 8bit Yes 16bit values in two transfers.
0CFh No specific usage 8bit ---
0D0h Master DMA Command/Status – Channels [7:4] 8bit Shw$
0D1h No specific usage 8bit ---
0D2h Master DMA Request - Channels [7:4] 8bit WO
0D3h No specific usage 8bit ---
0D4h Master DMA Mask - Channels [7:4] 8bit Yes
0D5h No specific usage 8bit ---
0D6h Master DMA Mode - Channels [7:4] 8bit Shw@
0D7h No specific usage 8bit ---
0D8h Master DMA Clear Pointer - Channels [7:4] 8bit WO
0D9h No specific usage 8bit ---
0DAh Master DMA Reset - Channels [7:4] 8bit WO
0DBh No specific usage 8bit ---
0DCh Master DMA Reset Mask - Channels [7:4] 8bit WO
0DDh No specific usage 8bit ---
0DEh Master DMA General Mask - Channels [7:4] 8bit Shw@
0DFh No specific usage 8bit ---
0E0h-2E7h No specific usage --- ---
2E8h-2EFh UART/IR - COM4 8bit ---
MSR bit enables/disables into I/O 2EFh
space. (UART1 MSR 51400014h[18:16],
UART2 MSR 51400014h[22:20]). Defaults to
LPC.
2F0h-2F7h No specific usage --- ---
2F8h-2FFh UART/IR - COM2 8bit ---
MSR bit enables/disables into I/O 2FFh
space. (UART1 MSR 51400014h[18:16],
UART2 MSR 51400014h[22:20]). Defaults to
LPC.
300h- 36Fh No specific usage --- ---
370h Floppy Status R A 8bit RO Second Floppy.
371h Floppy Status R B 8bit RO Second Floppy.
372h Floppy Digital Out 8bit Shw@ Second Floppy.
373h No specific usage 8bit ---
374h Floppy Cntrl Status 8bit RO Second Floppy.
375h Floppy Data 8bit Yes Second Floppy.
376h No specific usage 8bit ---
377h Floppy Conf Reg 8bit Shw$ Second Floppy.
378h-3E7h No specific usage --- ---
3E8h-3EFh UART/IR - COM3 8bit ---
MSR bit enables/disables into I/O 3EFh
space. (UART1 MSR 51400014h[18:16],
UART2 MSR 51400014h[22:20]). Defaults to
LPC.
3F0h Floppy Status R A 8bit RO First Floppy.
3F1h Floppy Status R B 8bit RO First Floppy.
3F2h Floppy Digital Out 8bit Shw@ First Floppy.
3F3h No specific usage 8bit ---
3F4h Floppy Cntrl Status 8bit RO First Floppy.
3F5h Floppy Data 8bit Yes First Floppy.
3F6h No specific usage 8bit ---
3F7h Floppy Conf Reg 8bit Shw$ First Floppy.
3F8h-3FFh UART/IR - COM1 8bit ---
MSR bit enables/disables into I/O 3FFh
space. (UART1 MSR 51400014h[18:16],
UART2 MSR 51400014h[22:20]). Defaults to
LPC.
480h No specific usage 8bit WO Write LPC and DMA. Read only DMA.