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George Beckett @markgbeckett.bsky.social · 2d

I am currently enjoying the simplicity and early aesthetic of #PerilousSwamp. Also, is the only game I have seen with checksum to confirm loaded correctly! #retrogaming

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George Beckett @markgbeckett.bsky.social · 3d

Nice work. Here's some software to get you started www.jupiter-ace.co.uk/index.html and github.com/markgbeckett...

Jupiter Ace Resource Site - Intro and Home page.

Jupiter Ace Resourece site is a restoration and preservation project for all Jupiter ACE material online since 2004

www.jupiter-ace.co.uk

George Beckett @markgbeckett.bsky.social · 4d

And what is your game/ program of choice?

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George Beckett @markgbeckett.bsky.social · 5d

Ultimate 8-bit maze game, now also available for #JupiterAce and #Minstrel4th. github.com/markgbeckett...

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George Beckett @markgbeckett.bsky.social · 10d

My shift is done, but there is still a couple of hours to catch #doorsopenday at #roeopen. Last entry at 4:15pm.

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Reposted by George Beckett

Tynemouth Software @tynemouthsoftware.co.uk · 10d

New blog post in which I give myself a lot of work combining Z80 code from several sources to build the enhanced Forth ROM for the Minstrel 4th.
blog.tynemouthsoftware.co.uk/2025/09/revi...
An even more extra work by choosing to do it using an archaic assembler that I happen to like.

Revisiting the Minstrel 4th Enhanced Forth ROM [Patreon Preview]

When I relaunched the Minstrel 4th earlier this year, I added some more ROMs to the standard ROM image. These included the ZX80 and ZX81 BAS...

blog.tynemouthsoftware.co.uk

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George Beckett @markgbeckett.bsky.social · 10d

And now we have a real astronomer to help answer the crazy diversity of questions people come up with. Everything from weather in Northern Chile to naming newly discovered stars! #roeopen #doorsopenday

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George Beckett @markgbeckett.bsky.social · 10d

All set for @lsstuk.bsky.social at #DoorsOpenDay #ROEOpen #lsst

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George Beckett @markgbeckett.bsky.social · 20d

Find out more at github.com/markgbeckett..., though remember it is a work in progress. #forth #retrogaming

zx81/husband_forth at main · markgbeckett/zx81

Software for the Sinclair ZX81 and Timex Sinclair 1000 computers - markgbeckett/zx81

github.com

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George Beckett @markgbeckett.bsky.social · 27d

One of coolest features of Tree Forth (and H Forth) is support for proper multitasking (on a humble #TS1000/ #ZX81). The manual includes example stack monitor, which displays current stack contents every few seconds, while you continue to debug your #Forth project, in the built-in screen editor.

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George Beckett @markgbeckett.bsky.social · 27d

Have been delving into Husband #Forth, a replacement ROM for #ZX81. It would not run out of box on @tynemouthsoftware.co.uk #Minstrel3, so I have set out to find out why. A work in progress, but I now have both H Forth (and its TS100 predecessor, Tree Forth) running on the Mistrel3! #retrogaming

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George Beckett @markgbeckett.bsky.social · Sep 3

One of these. Was great!

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George Beckett @markgbeckett.bsky.social · Aug 25

When you read blog.tynemouthsoftware.co.uk/2025/08/mini..., you quickly realise there is scope to "modify" the ZX81 display to a certain extent. Here I've pushed it just a little too far, but you hopefully get the idea. #zx81

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George Beckett @markgbeckett.bsky.social · Aug 25

I've re-centred the screen vertically, by adjusting the number of scanlines in each border. However, the way that Husband Forth signals the end of a scanline in the main display area makes it more difficult to centre screen horizontally. #retrogaming

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George Beckett @markgbeckett.bsky.social · Aug 25

There is a near-equivalent version based on Husband Forth ROM - github.com/markgbeckett...

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Reposted by George Beckett

Tynemouth Software @tynemouthsoftware.co.uk · Aug 24

New blog post - a minimal implementation of the compute and display (or slow) mode display for ZX81 or Minstrel 3 hardware.
blog.tynemouthsoftware.co.uk/2025/08/mini...
I got this down to about 200 bytes of Z80, so let's go through all of them and see what they do.

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Reposted by George Beckett

Tynemouth Software @tynemouthsoftware.co.uk · Aug 10

New blog post - blog.tynemouthsoftware.co.uk/2025/08/pet-...
An update to the PET 2001 6540-010 character ROM replacement board, now with switch on the side to select between the versions for BASIC 2 and 4 or BASIC 1 (which was previously hidden under the chip)

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Reposted by George Beckett

Tynemouth Software @tynemouthsoftware.co.uk · Jul 31

Last day. Don't miss out.

Tynemouth Software @tynemouthsoftware.co.uk · Jul 25

Less than a week left to take advantage of 15% off everything throughout July to celebrate 15 years of Tynemouth Software.

www.tindie.com/stores/tynem...

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George Beckett @markgbeckett.bsky.social · Jul 17

And Sony still has the manual on their website (CFD-120L)

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George Beckett @markgbeckett.bsky.social · Jul 17

My Sony "boombox" had a switch to change the sensitive of FM reception. The manual said something about using it in areas with densely packed FM signals? When you pressed it, the volume of the FM sound dropped a little (and I convinced myself there was less hiss)

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George Beckett @markgbeckett.bsky.social · Jul 17

Long shot, but you aren't seeing the effects of a wayward interrupt in IM2?

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George Beckett @markgbeckett.bsky.social · Jul 13

Today is #embraceyourgeekness day, which I will celebrate with a game of #Centipede on the #Minstrel4D; written by Colin Dooley and ported (w/ sound and joystick support) to #Minstrel4D and code for spider finished by me - github.com/markgbeckett... #retrogaming

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George Beckett @markgbeckett.bsky.social · Jul 13

Candyfloss variant on #Oric1 is a good version too. "Donkeys ate all your candyfloss!"

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George Beckett @markgbeckett.bsky.social · Jul 13

I think they were dropped to fit in ZX Printer support.

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George Beckett @markgbeckett.bsky.social · Jul 9

Bienvenue à Montréal! #poutine

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