Third Party PA-RISC Processors
Overview
Several third-party OEMs designed PA-RISC processors for workstations and servers (Hitachi) but also for embedded systems of the 1990s like set-top boxes, TVs, device controllers and printers.
| CPU | ISA | Year | Clock | Cache | Bus | Scalar | Units | Controllers |
|---|---|---|---|---|---|---|---|---|
| Amiga Hombre | 32-bit PA 1.1 |
1995 | 125MHz | ? | 64-bit | 1-way | INT | Memory DMA PCI I/O VGA audio Copper Blitter |
| Hitachi PA/50L | 32-bit PA 1.1 |
1993 | 33MHz | 12KB | ? | 1-way | INT FP |
|
| Hitachi PA/50M | 32-bit PA 1.1 |
1993 | 60MHz | 12KB | ? | 1-way | INT FP |
|
| Hitachi HARP-1 | 32-bit PA 1.1 |
1994 | 150MHz | 24KB 1MB L2 |
? | 2-way | 2 INT FP Vector |
|
| Hitachi HARP-1E | PA-RISC 1.1 32-bit RISC |
1995 | 150 MHz | 32 KB 8 MB L2 |
? | 2-way | 2 INT FP Vector |
|
| Winbond W89K | 32-bit PA 1.1 |
1994 | 33/66MHz | 4KB | i486 | 1-way | INT | none? |
| Winbond W90210 W90215 |
32-bit PA 1.1 |
1997 | 33/66MHz | 12KB | i486 | 1-way | INT MAX-1 |
DRAM DMA PCI I/O |
| Winbond W90220 W90221 |
32-bit PA 1.1 |
1999 | 150MHz | 8KB | i486 | 1-way | INT MAC(DSP) MAX-1 |
DRAM DMA PCI IDE I/O VGA (W90221) TV (W90221) |
| OKI OP32 | 32-bit PA 1.1 |
1994 | 33MHz | ? | ? | 1-way | INT | DRAM DMA |
Amiga Hombre
Between 1992 and 1994, Commodore designed a new graphics chipset to power Amiga computers based on HP PA-RISC, called Hombre.
The development effort apparently included HP and was based on a PA-RISC core to be available for 1995 production for a CD-based Game Machine
, cable TV, MPEG and as a PCI-based graphics accelerator.
The Hombre processor design was to be implemented in two chips:
- 32-bit PA-RISC 1.1, Integer-only
- CPU chip (Nathaniel) with 32-bit PA-RISC core: RISC integer core based on PA-7150 at 125MHz, DMA interface, audio and CD interfaces, system, display and PCI buses
- Video chip (Natalie) with graphics functions and buses
- Both were targeted for 0.6µ, 3-level metal CMOS in 3.3 V in 304-PQFP
- 50MHz system bus, 64-bit wide
- with a 5-stage pipeline and 64-bit datapath
OKI OP32 processor
OKI is a Japanese electronics manufacturer, Oki Electric Industry Co., which was part of the Precision RISC Organisation (PRO) for PA-RISC in the 1990s. OKI developed the OP32/50N, a PA-RISC processor, through its OKI Semiconductor business unit in the mid-1990s. OP32 was an embedded controller introduced in 1994, based on a 32-bit PA-RISC design with integrated DRAM and DMA controllers.
The OP32/50N was targeted at laser printers, Fax machines, X terminals and telecom and automotive markets, where it competed with MIPS and other custom RISC designs.
- PA-RISC version 1.1 32-bit
- 33 MHz frequency
- 14.3×14.3 mm² die, 1,100,000 FETs, 0.8µ, 3-layer metal CMOS
OKI later spun off the OKI Semiconductor business unit.
Documentation
- Chronology of Workstation Computers (1993) Ken Polsson (November 2007. Accessed November 2007)
- PROgress (PA-RISC) Newsletter - comp.sys.hp Candace Doyle (October 1993: Precision Risc Organization. Accessed December 2007)
- PROgress (PA-RISC) Newsletter - comp.sys.hp, Candace Doyle (October 1993: Precision Risc Organization. Accessed December 2007)
- PA-RISC in a PC box (was: Re: HP's vision of a low-end 3000) comp.sys.hp.mpe, Stan Sieler (Februar 1996. Accessed December 2007)
- Hombre - The last Commodore custom chipset, Amiga History Guide
- CBMs Plans for the RISC-Chipset, Dave Haynie 1995