And we're going to make it worse, because this is the lowest-binned Stacy with the base 1MB of memory. I want to put the full 4MB the hardware supports in it to expand its operating system choices. It turns out that's much harder to do than I ever expected, making repairing its bad left mouse button while we're in there almost incidental — let's just say the process eventually involved cutting sheet metal. I'm not entirely happy with the end result but it's got 4MB, it's back together and it boots. Grit your teeth while we do a post-mortem on this really rough Refurb Weekend.
Old Vintage Computing Research
REWIND and PLAY
Saturday, January 4, 2025
Refurb weekend: Atari Stacy
Wednesday, December 25, 2024
A mostly merry Southern Hemisphere Commodore Christmas
Saturday, December 7, 2024
Composite and hard reset mods for the Tandyvision One
Like my original Tutor, this is one system I'd never part with, so if I were going to make some tweaks to it this would be the unit. We're going to do two mods in this article, neither particularly complex but nonetheless handy: composite video and sound outputs for improved quality and flexibility, and a power cycle hard reset button for convenience and less wear on the power switch. Some drilling and soldering required but not very much.
Friday, November 29, 2024
The Hall SC-VGA-2 video processor, the Atari ST and NeXTSTEP: more tales of the unscreenshotable
While you might be able to trick the hardware into emitting a compatible signal, that's not good enough or even possible with several of my machines. Previously my problem child was astro, my SAIC Galaxy 1100, a modified PA-RISC HP 9000/712 crammed into a MIL-SPEC portable case with a fabulous built-in flat panel. These machines ran HP-UX 10.10 in their original heyday, but this particular system runs NeXTSTEP 3.3 for PA-RISC during the brief period of time NeXT supported the architecture and was a big hit at the Vintage Computer Festival West a few years ago. Its flat panel runs at an odd 62Hz and the external VGA port only generates a 60Hz signal for 640x480 (all other resolutions use different refresh rates), which is hopeless for running NeXTSTEP. However, now I have a new candidate I'd like to get some grabs off: a particularly problematic member of the Atari ST family which has been the subject of a long-running and highly frustrating extended Refurb Weekend. You'll get to meet this bad girl soon enough. The standard ST high resolution mode is 640x400 — at 71.2Hz. I can get a picture from it with my trusty NEC flat panel, but not with the Inogeni.
The usual solution to this is a scan converter, but those can be expensive and inconvenient. Here's one I picked up used on eBay for $2. Yes, really. It cost more to ship it.
This is the Hall Research Technologies SC-VGA-2, sold as a "VGA/HDTV Video Processor." In addition to slicing, dicing and pureeing, apparently, it will take any of a bundle of input formats and both rescale and resample them on the fly into the VGA or HDTV signal you desire, including 60Hz rates. This came from a seller specializing in teleprompter equipment and Hall still sells an HDMI version with additional resolutions ... for around US$500. However, this or the slightly newer SC-VGA-2A and SC-VGA-2B are all relatively common devices and found substantially cheaper used. Let's try it out and show some sample output, including those delicious NeXTSTEP system messages and some ST grabs.
Saturday, November 16, 2024
One-parting some Commodore 64 utilities for fun and profit
Saturday, October 26, 2024
The unreleased Commodore HHC-4's secret identity