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A serial converter that works, finally

In the several years since I had build my Micro-Kim, I could never successfully connect it to a USB port on a laptop. It didn't matter if I tried minicom under Linux or hyperterm under Windows. The Micro-Kim just wasn't recognized. But, there was nothing wrong with the RS-232 on the Micro-Kim, since...
by thegrendel
Jul Sun 28, 2013 1:30 pm
 
Forum: Micro-KIM General Discussion
Topic: A serial converter that works, finally
Replies: 1
Views: 5133

Heathkit ET-3400

It's a classic 6800 CPU trainer, with breadboarding block and all address and data lines, and signals brought out for easy access. The ROM code is available, as are the schematics, and it shouldn't be terribly difficult to recreate from scratch.
by thegrendel
Jun Tue 01, 2010 3:19 pm
 
Forum: Venues, projects and off topic stuff - NO SPAM
Topic: Heathkit ET-3400
Replies: 0
Views: 3151

Radio Shack Model 100 (equivalent)

This is a wild, crazy suggestion. How about a hardware emulation of the Radio Shack Model 100 portable (circa 1982)? You could probably substitute a Z80 for the CPU and maybe Small C for the Microsoft BASIC. Maybe just a bare board with an RS232 interface, and no LCD display . . . and an optional ca...
by thegrendel
Apr Sat 24, 2010 3:02 am
 
Forum: Venues, projects and off topic stuff - NO SPAM
Topic: Radio Shack Model 100 (equivalent)
Replies: 1
Views: 3985

68000 SBC

Vince, I'd like to see you do a single-board 68000-based computer, something like the Motorola MC68000 ECB or the HT68K "Tiny Giant" SBC. I believe that the 68000 and support chips are still available and reasonably priced. The 68000 boards have no built-in display and are intended to atta...
by thegrendel
Apr Sat 10, 2010 2:34 pm
 
Forum: Venues, projects and off topic stuff - NO SPAM
Topic: 68000 SBC
Replies: 0
Views: 3620

I've got the serial port working with a Thinkpad 770X, but only under Windows (Win2K, Hyperterm, 1200 baud, 8N2). It won't work on that machine on the (Puppy) Linux partition, using minicom. Don't know why not. So, that gives me two options, so far. 1) The TP 760XD, DSL Linux, 300 baud. 2) The TP 77...
by thegrendel
Jan Mon 11, 2010 12:52 am
 
Forum: Troubleshooting
Topic: Serial port checkout?
Replies: 8
Views: 19736

Serial port finally working, but ...

Well, here's what didn't work for me: A USB-to-serial port converter. Didn't work under either Linux or Windows. The converter itself is okay, since it works with other applications. IBM Thinkpad serial ports for the "newer" models. Anything newer than a 760. There seems to be a basic hard...
by thegrendel
Jan Thu 07, 2010 6:57 pm
 
Forum: Troubleshooting
Topic: Serial port checkout?
Replies: 8
Views: 19736

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