ASP(4) - Device Drivers Manual (hppa)

ASP(4) - Device Drivers Manual (hppa) #

ASP(4) - Device Drivers Manual (hppa)

NAME #

asp - core bus controller as present on older HP 9000/700 machines

SYNOPSIS #

asp0 at mainbus? irq 28 gsc* at asp?

DESCRIPTION #

The supported Core bus controllers are those present on older PA-RISC workstations, and include:

  • Core bus controller
  • System clock
  • Interrupt controller
  • DMA controller
  • Real-time clock Interface
  • RAM and EEPROM controllers

The irq level supplied is hardwired to the CPU pin, so changing the value would not produce any noticeable results (except lost interrupts for the whole I/O subsystem).

MACHINES #

An incomplete list of machines that use the ASP bus controller:

  • 705, 710
  • 715/{33,50,75}
  • 725/{50,75}
  • 720, 730, 750
  • 735/*
  • 745i/{50,75}
  • 747i/{50,75}
  • 755/*

SEE ALSO #

gsc(4), intro(4), io(4)

Hardball I/O Subsystem ERS, Revision 1.1, Hewlett-Packard, 30 September 1991.

HISTORY #

The asp driver appeared in OpenBSD 2.4.

OpenBSD 7.5 - June 18, 2018