The '''PC532''' was a "home-brew" microcomputer design created by George Scolaro and Dave Rand in 1989-1990, based on the National Semiconductor NS32532 microprocessor (a member of the NS320xx series). Full hardware documentation for the design, including schematics and PAL programming data, was made freely available, and a short run (around 200) of motherboard PCBs were produced for hobbyists to populate and assemble into fully functional systems.
== Hardware specifications == * PC/AT form-factor motherboard * NS32532 CPU and NS32381 FPU (25 MHz) * 4 to 32 MB of RAM * National Semiconductor DP8490 SCSI host adapter * Adaptec AIC-6250 SCSI host adapter * Four SCN2861 DUARTs (providing 8 serial ports) * 27256 32 kB firmware EPROM
== Operating systems == The following operating systems were ported to the PC532:
;MINIX: A port of MINIX 1.3 to the PC532 (sometimes referred to as '''MINIX-532''') was released by Bruce Culbertson in 1990. ;Mach: Mach 3.0 was ported to the PC532 in 1992 by Johannes Helander, Tero Kivinen, and Tatu Ylönen; some work was also done by them on porting a Net/2 BSD-based Mach server (''bnr2ss'') to provide BSD UNIX emulation. ;NetBSD/pc532: A project to port 386BSD 0.1 to the PC532, initially called '''532BSD''', was started by Phil Nelson. This was integrated into the NetBSD project in 1993 and became NetBSD/pc532, with Nelson as the port maintainer. On January 9, 2008, NetBSD/pc532 was dropped from the NetBSD source tree, as GCC support for the NS32532 microprocessor had been dropped.<ref>[http://mail-index.netbsd.org/port-pc532/2008/01/09/0000.html port-pc532: Death of NetBSD/pc532<!-- Bot generated title -->]</ref>
== References == * [http://www.netbsd.org/Ports/pc532/faq.html NetBSD/pc532 FAQ] * [http://www.berklix.org/pc532/ PC532 Notes by Julian H. Stacey] * [http://mailman.berklix.org/mailman/listinfo/pc532/ Mail list, new 2017, supersedes defunct lists on bungi.com & netbsd.org] * [ftp://ftp.berklix.org/pub/pc532/ FTP archive, new 2017, several on mail list have write access] <references/>
== External links == * [http://www.cpu-ns32k.net/TRIPUTER.html PC532 implemented] in a FPGA.
Category:Microcomputers Category:Computer-related introductions in 1989