User manual
DIGITAL-LOGIC AG MSM800SEV/SEL/BEV/XEV/XEL Detailed Manual V1.5
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I/O Map
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I/O Addr.
Function Size
R/W Comment
0CCh
Master DMA Address - Channel 7 8bit Yes 16bit values in two transfers.
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.
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