Third Party PA-RISC Processors
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 | Architecture | Year | FETs | Clock | Cache | Bus | Scalar | Units | I/O |
|---|---|---|---|---|---|---|---|---|---|
| Amiga Hombre | PA-RISC 1.1 32-bit RISC |
1995 | ? | 125 MHz | ? | 64-bit | 1-way | INT | multiple |
| Hitachi PA/50L | PA-RISC 1.1 32-bit RISC |
1993 | 1.2M | 33 MHz | 12 KB | ? | 1-way | INT, FP | |
| Hitachi PA/50M | PA-RISC 1.1 32-bit RISC |
1993 | 1.2M | 60 MHz | 12 KB | ? | 1-way | INT, FP | |
| Hitachi HARP-1 | PA-RISC 1.1 32-bit RISC |
1994 | 2.8M | 120 MHz | 24 KB 1 MB L2 |
? | 2-way | 2 INT, FP | |
| Hitachi HARP-1E | PA-RISC 1.1 32-bit RISC |
1995 | 4.5M | 150 MHz | 32 KB 8 MB L2 |
? | 2-way | 2 INT, FP Vector |
|
| Winbond W89K | PA-RISC 1.1 L0 32-bit RISC |
1994 | 1.1M | 33/66 MHz | 4 KB | i486 | 1-way | INT | |
| Winbond W90210 W90215 |
PA-RISC 1.1 L0 32-bit RISC |
1997 | ? | 33/66 MHz | 12 KB | i486 | 1-way | INT MAX-1 |
multiple |
| Winbond W90220 W90221 |
PA-RISC 1.1 L0 32-bit RISC |
1999 | ? | 150 MHz | 8 KB | i486 | 1-way | INT DSP MAX-1 |
multiple |
| Oki OP32 | PA-RISC 1.1 32-bit RISC |
1994 | 1.1M | 33 MHz | ? | ? | 1-way | INT | multiple |
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