HP B160L Bedienungsanleitung Seite 57

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PA-RISC Chipsets Dino/Cujo
Wax is a secondary I/O controller complimentary to the LASI chipset. It implements various secondary
I/O functions and acts as a I/O bus to GSC adapter for different external buses as EISA, HP-HIL and
HP-IB. Most systems use it to complement LASI with other needed I/O functions that were previously
implented in diverse I/O ASICs. It is implemented in the same process and package as LASI.
Features
GSC bus interface with GSC+ features
EISA bus converter
Interfaces GSC to the 32-bit EISA, so EISA devices can attach
Does not provide complete EISA bus conversion provides an “Intel i486-like” bus inter-
face, to which external EISA chips attach
Interfaces to external EISA controller: TI TACT84500 (provides EISA bus control unit
EBCU and EISA peripheral control unit EPCU
Integrates the EDPU (EISA data path unit) functionality on-chip
Attaches to i486 bus for control, bus and IRQ, and directly to EISA for data
Can be switched at power up to operate as ISA controller (to directly interface with ISA-only
devices such as Token Ring controllers etc.)
Serial interface NS16550A compatible RS232 (software-compatible with LASI circuitry)
HP-HIL interface, compatible to previously separate HP HIL chip (1820-4784) used in older
workstations
HPIB interface for instrumentation devices, needs three external chips
Interrupt control
Timers (real time, watchdog)
0.8µ(micron) CMOS (HP CMOS26B process), packaged in 240-pin MQUAD
Wax chip numbers: 1FT4-0001
References
1. External Reference Specification (ERS) for the Wax I/O ASIC
61
Hewlett-Packard Company (May
1993, version 1.0 redacted)
2.4.5 Dino/Cujo
Used in
A180, A180C
B132L, B132L+, B160L, B180L+
C132L, C160L, C160, C180, C200, C240, C360
61
http://ftp.parisc-linux.org/docs/chips/WAX_ERS_V1.0_Redacted.pdf
50
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