IBM RT Series Hardware Reference Manual page 158

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Sequencer Registers

Clocking Mode

Character Map Select

Sequencer Address Register

The Address Register is a pointer register located at address hex

3C4. This register is loaded with a binary value that points to the

sequencer data register where data is to be written. This value is

referred to as "Index" in the table above.

Sequencer Address Register Format

Reset Register

Sequencer Address Bits-A binary value pointing

to the register where data is to be written.

This is a write-only register pointed to when the value in the

address register is hex 00. The output port address for this

18 IBM Enhanced Graphics Adapter

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