DIGITAL-LOGIC Microspace MSB900L User Manual page 38

DIGITAL-LOGIC AG
I/O Map
Continued...
I/O Addr. Function
0CCh Master DMA Address - Channel 7
0CDh No Specific Usage
0CEh Master DMA Counter - Channel 7
0CFh No Specific Usage
0D0h Master DMA Command/Status – Channels [7:4]
0D1h No Specific Usage
0D2h Master DMA Request - Channels [7:4]
0D3h No Specific Usage
0D4h Master DMA Mask - Channels [7:4]
0D5h No Specific Usage
0D6h Master DMA Mode - Channels [7:4]
0D7h No Specific Usage
0D8h Master DMA Clear Pointer - Channels [7:4]
0D9h No Specific Usage
0DAh Master DMA Reset - Channels [7:4]
0DBh No Specific Usage
0DCh Master DMA Reset Mask - Channels [7:4]
0DDh No Specific Usage
0DEh Master DMA General Mask - Channels [7:4]
0DFh No Specific Usage
0E0h-2E7h No Specific Usage
2E8h-2EFh UART/IR - COM4
2F0h-2F7h No Specific Usage
2F8h-2FFh UART/IR - COM2
300h- 36Fh No Specific Usage
370h Floppy Status R A
371h Floppy Status R B
372h Floppy Digital Out
373h No Specific Usage
374h Floppy Cntrl Status
375h Floppy Data
376h No Specific Usage
377h Floppy Conf Reg
378h-3E7h No Specific Usage
3E8h-3EFh UART/IR - COM3
3F0h Floppy Status R A
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MSB900/L Detailed Technical Manual V1.0
Size R/W Comment
8bit Yes 16bit values in two transfers.
8bit ---
8bit Yes 16bit values in two transfers.
8bit ---
8bit Shw$
8bit ---
8bit WO
8bit ---
8bit Yes
8bit ---
8bit Shw@
8bit ---
8bit WO
8bit ---
8bit WO
8bit ---
8bit WO
8bit ---
8bit Shw@
8bit ---
--- ---
MSR bit enables/disables into I/O
2EFh space. (UART1 MSR
51400014h[18:16], UART2 MSR
8bit ---
51400014h[22:20]). Defaults to
LPC.
--- ---
MSR bit enables/disables into I/O
2FFh space. (UART1 MSR
51400014h[18:16], UART2 MSR
8bit ---
51400014h[22:20]). Defaults to
LPC.
--- ---
8bit RO Second Floppy.
8bit RO Second Floppy.
8bit Shw@ Second Floppy.
8bit ---
8bit RO Second Floppy.
8bit Yes Second Floppy.
8bit ---
8bit Shw$ Second Floppy.
--- ---
MSR bit enables/disables into I/O
3EFh space. (UART1 MSR
51400014h[18:16], UART2 MSR
8bit ---
51400014h[22:20]). Defaults to
LPC.
8bit RO First Floppy.
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