VersaLogic VL-586-1, Reference Manual

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VL-586-1 Reference Manual Register Descriptions – 51
Register Descriptions
Introduction
This chapter lists all the user-programmable registers on the VL-586-1 CPU card. Programming
details are included for non PC/AT registers only, information on the standard PC/AT registers
can be found in
The Programmer’s PC Sourcebook or The Undocumented PC listed in “Other
References” on page vi.
Register Summary
The tables in this section list all programmable registers on the VL-586-1 CPU card. They are
organized in the following groups:
Table 25: Programmable Registers
Registers Page
DMA 1 Controller 52
DMA 2 Controller 53
DMA Page 53
COM1 Serial Port 54
COM2 Serial Port 54
LPT1 Parallel Port 55
82C735 Configuration
Interrupt Controller (Master) 57
Interrupt Controller (Slave) 57
Counter/Timer (Channels 0 - 2) 58
Counter/Timer (Channels 3 - 5) 58
VersaLogic Registers 58
5