The SuperWorkstation SW-40S represents an interesting chapter in Sun-compatible workstation history. During the late 1980s and early 1990s, several third-party manufacturers produced Sun-compatible systems that could run SunOS and later Solaris. These machines often offered performance improvements or cost savings compared to official Sun hardware.
The SW-40S was essentially a SPARCstation 1 chassis upgraded with SPARCstation 2 internals, creating a hybrid system that reports itself as a 4/75 (SPARCstation 2) while housed in the original “pizza box” form factor. This particular machine dates from approximately 1989-90, placing it at the dawn of the SPARC workstation era.
History
The original SPARCstation 1, introduced in April 1989, was Sun’s first “pizza box” workstation and marked a significant departure from the larger VME-based systems that preceded it. It was the first desktop SPARC system and established the compact form factor that would define Sun workstations for years to come.
The SPARCstation 2, released in November 1990, offered significantly improved performance with its faster processor and enhanced memory capabilities. Third-party upgrade kits and compatible systems like the SW-40S allowed owners of earlier hardware to benefit from these improvements without purchasing an entirely new system.
These SuperWorkstation machines were popular in engineering and scientific computing environments where the combination of Unix reliability, networking capabilities, and raw computational power was essential.
Specifications
| Attribute | Value |
|---|---|
| Release Date | April 1989-90 (approx.) |
| Model | SW-40S / (reports 4/75) / Serial# 13627630 |
| CPU | Unknown (upgraded) |
| Architecture | Sun4c / OBP 2.4 |
| RAM | 40Mb |
| OS | SunOS 4.1.4 |
| Graphics | SBus: CG6 TGX+ Double Buffer (4M mappable) 1280x1024@76 |
| Environment | OpenWindows 3.0_414 / X11R5 / X11R6 / Motif 1.2 |
| Disk Image | 2.1 GB SCSI / ZuluSCSI RP2040 |
Useful Documents
SPARCstation 1+ Field Service Manual (PDF) - Sun’s official field service manual for the SPARCstation 1+. Covers diagnostics, component identification, and repair procedures applicable to SPARCstation 1 series systems.
Getting SunOS 4.1.4 Working - Installation and configuration guide for SunOS 4.1.4 on Sun4c systems.
SunOS DNS without NIS - Patching libc to enable DNS name resolution without NIS on SunOS 4.1.x.
Fixing Corrupted TOD Clock on SunOS 4.1.4 - Resolving time-of-day clock errors caused by dates beyond the original epoch on SunOS.
Resetting IDPROM on Sun Workstations - Procedure for reprogramming the IDPROM after a timekeeper chip replacement.
M48T02 Timekeeper External Battery Mod - Adding an external battery to a dead timekeeper chip to restore NVRAM and clock function.
Last OBP Firmware Versions - Reference table of the final OpenBoot PROM versions available for each Sun workstation.
Disk Image
A bootable SunOS 4.1.4 disk image is available for this system, configured for use with ZuluSCSI SCSI emulators.
Download: HD3_SunOS_4.1.4_SWS_PROTO_512.img.gz
SHA1: ef78faba0ccc307ed8f12d2c1762f4cd674c9532
For setup instructions, see the ZuluSCSI Disk Images.
Gallery
