SC2200 datasheet(306/433 Pages) NSC

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306

Revision 3.0

Core Logic Module (Continued)

Table5-44. DMA PageRegisters

Bit

Description

I/O Port 081h

DMA Channel 2 Low Page Register (R/W)

Address bits [23:16] (byte 2).

I/O Port 082h

DMA Channel 3 Low Page Register (R/W)

Address bits [23:16] (byte 2).

I/O Port 083h

DMA Channel 1 Low Page Register (R/W)

Address bits [23:16] (byte 2).

I/O Port 087h

DMA Channel 0 Low Page Register (R/W)

Address bits [23:16] (byte 2).

I/O Port 089h

DMA Channel 6 Low Page Register (R/W)

Address bits [23:16] (byte 2).

I/O Port 08Ah

DMA Channel 7 Low Page Register (R/W)

Address bits [23:16] (byte 2).

I/O Port 08Bh

DMA Channel 5 Low Page Register (R/W)

Address bits [23:16] (byte 2).

I/O Port 08Fh

ISA Refresh Low Page Register (R/W)

Refresh address.

I/O Port 481h

DMA Channel 2 High Page Register (R/W)

Address bits [31:24] (byte 3).

Note:

This register is reset to 00h on any access to Port 081h.

I/O Port 482h

DMA Channel 3 High Page Register (R/W)

Address bits [31:24] (byte 3).

Note:

This register is reset to 00h on any access to Port 082h.

I/O Port 483h

DMA Channel 1 High Page Register (R/W)

Address bits [31:24] (byte 3).

Note:

This register is reset to 00h on any access to Port 083h.

I/O Port 487h

DMA Channel 0 High Page Register (R/W)

Address bits [31:24] (byte 3).

Note:

This register is reset to 00h on any access to Port 087h.

I/O Port 489h

DMA Channel 6 High Page Register (R/W)

Address bits [31:24] (byte 3).

Note:

This register is reset to 00h on any access to Port 089h.

I/O Port 48Ah

DMA Channel 7 High Page Register (R/W)

Address bits [31:24] (byte 3).

Note:

This register is reset to 00h on any access to Port 08Ah.

I/O Port 48Bh

DMA Channel 5 High Page Register (R/W)

Address bits [31:24] (byte 3).

Note:

This register is reset to 00h on any access to Port 08Bh.

SC2200 Datasheet(PDF) 306 Page - National Semiconductor (TI)

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