Search found 70 matches

by monsonite
Yesterday, 23:24
Forum: Hardware and software hacking
Topic: Overview of hard/software subprojects
Replies: 1
Views: 70

Re: Overview of hard/software subprojects

Walter,

Thank you for summarising these various projects.

As the forum grows, the location of these projects must be a mystery to our new members.

Now we have a list of them all in the one place. - Perfect


Ken
by monsonite
27 May 2020, 09:31
Forum: Escape Meta Alt Control Shift
Topic: In memoriam Marcel
Replies: 15
Views: 2506

Re: In memoriam Marcel

Walter, This is deeply saddening news, and my sympathies go to his family and friends, and of course to the wider Gigatron community. I met Marcel last September at the Cambridge Computing Museum, and have never met such a charming, thoughtful and brilliant engineer. I have had a hardware career for...
by monsonite
15 Apr 2020, 12:33
Forum: Hardware and software hacking
Topic: Conway's Game of Life in Commodore BASIC
Replies: 1
Views: 2299

Conway's Game of Life in Commodore BASIC

As some will know John H Conway - who devised the game "Life" passed away on April 11th. As a tribute, some of our friends on the retrocomputing forum have recreated a version of Life in Commodore BASIC. https://retrocomputingforum.com/t/conways-life-in-basic/1153 I'm going to have a go at getting t...
by monsonite
03 Apr 2020, 21:41
Forum: Hardware and software hacking
Topic: Using a USB keyboard
Replies: 7
Views: 2430

Re: Using a USB keyboard

Hi Dave,

Are you perhaps using one of those USB digital voltage and current meters?

I bought one of them, and found that it dropped a lot of voltage - from 5V to 4.5V IIRC.

If it is in line with the Gigatron supply - try removing it.

That might be part of your problem.


Ken
by monsonite
31 Mar 2020, 16:51
Forum: Hardware and software hacking
Topic: Alternative Languages
Replies: 4
Views: 1882

Alternative Languages

Hi All, I have started this new topic so that alternative languages may be discussed without deviating or diluting the superb content of some of the existing threads. Clearly there is some interest in Forth on this forum - which is excellent, bearing in mind that Chuck Moore was presented a Gigatron...
by monsonite
31 Mar 2020, 16:19
Forum: Hardware and software hacking
Topic: A Forth for Gigatron?
Replies: 14
Views: 8246

Re: A Forth for Gigatron?

Hi, I have been following Ulrich Hoffman and Andrew Read's work for a couple of years. There an interesting paper from the 2018 Euroforth conference that was held in Edinburgh http://www.complang.tuwien.ac.at/anton/euroforth/ef18/papers/hoffmann.pdf The Forth kernel is first dis-aggregated into two ...
by monsonite
03 Feb 2020, 01:20
Forum: Kit assembly gallery
Topic: Built Gigatron with IC sockets
Replies: 6
Views: 2893

Re: Built Gigatron with IC sockets

Hi ECL, I built mine up entirely using sockets too. Rather than glue, I would tack the socket in place by soldering two diagonally opposing pins. Unfortunately I had just one badly soldered joint - so on first power up, operation was intermittent - but with full visual inspection - easily solved. Th...
by monsonite
28 Dec 2019, 12:09
Forum: Hardware and software hacking
Topic: Modified Gigatron Design Ideas
Replies: 57
Views: 24813

Re: Opcode mods

Hi PurpleGirl, Using a ROM as the instruction decoder is an often used approach, but the problem is with the speed an instruction can be decoded. Fast ROMs are not very common these days and the AT27C1024 from Microchip/Atmel has an access time of 45nS. You might find that you could sample a batch o...
by monsonite
17 Nov 2019, 00:44
Forum: Escape Meta Alt Control Shift
Topic: Forth Day 2019
Replies: 5
Views: 2829

Re: Forth Day 2019

Thanks Everyone,

Its been a very enjoyable day - Chuck has just finished his "Fireside Chat" presentation.

I have put a pdf of my slides online at my github repository

https://github.com/monsonite/Forth-Day-2019


Best from Stanford,


Ken
by monsonite
16 Nov 2019, 21:59
Forum: Escape Meta Alt Control Shift
Topic: Forth Day 2019
Replies: 5
Views: 2829

Re: Forth Day 2019

Hi All, My presentation on the Gigatron was well received at Forth Day here at Stanford University. I presented a Gigatron kit, to Forth Founder, Chuck Moore, in appreciation for his lifetime contributions to computer science. Another kit went to Andreas Wagner, an enthusiastic young Forther, who is...