Search found 393 matches

by Bill B
29 Oct 2023 11:24
Forum: MEMOFEST 2023
Topic: Memofest 2023, Where and When?
Replies: 53
Views: 3990258

Re: Memofest 2023, Where and When?

Jim demonstrated the Sound Effects and Music code for the Memotech that he and I have been working on together. Jim has code (EnvoSound, originally from RollaBearing) for producing sophisticated sound effects from the Memotech SN76489 sound chip. This code applies complex sound and frequency envelop...
by Bill B
29 Oct 2023 10:50
Forum: MEMOFEST 2023
Topic: Memofest 2023, Where and When?
Replies: 53
Views: 3990258

Re: Memofest 2023, Where and When?

I demonstrated the Memotech emulator MEMU running on a Raspberry Pi Pico: 20231029_083201.jpg My latest version of MEMU for the Pico adds: The emulation configuration dialog. Silicon disks, including huge disk support. These features were already in the PC versions of MEMU. Adding them to the Pico v...
by Bill B
29 Oct 2023 10:18
Forum: MEMOFEST 2023
Topic: Memofest 2023, Where and When?
Replies: 53
Views: 3990258

Re: Memofest 2023, Where and When?

The VDP emulation has also been enhanced. Martin had already added multi-colour sprites which the TMS9929A cannot do. I have further added multi-colour 40-column text. 20231029_080708.jpg The emulated VDP output also goes through the colour palette so that any of the 16 VDP colours can be mapped to ...
by Bill B
29 Oct 2023 10:05
Forum: MEMOFEST 2023
Topic: Memofest 2023, Where and When?
Replies: 53
Views: 3990258

Re: Memofest 2023, Where and When?

My MFX is not a standard one, I have been playing with the firmware for the FPGA. I have added 64-colour support to the 80-column display, rather than just 8 colours: 20231029_073328.jpg The MTX hardware is actually capable of producing 4096 (slightly) different colours (12-bits, although not on the...
by Bill B
29 Oct 2023 09:32
Forum: MEMOFEST 2023
Topic: Memofest 2023, Where and When?
Replies: 53
Views: 3990258

Re: Memofest 2023, Where and When?

My "second" MTX512: 20231028_082400.jpg It was acquired probably some time in the 90s, and has sat in a cupboard ever since. It was fished out to demonstrate the MFX. It suffers from rather stiff keys owing to the lack of use. Both Jim and I demonstrated during the day the advantages of th...
by Bill B
29 Oct 2023 09:23
Forum: MEMOFEST 2023
Topic: Memofest 2023, Where and When?
Replies: 53
Views: 3990258

Re: Memofest 2023, Where and When?

Dave bought along his MTX512. It was the first one I have noticed as having the RS232 ports fitted. (Sorry no photo :oops: ). Opening the case revealed an FDX interface board fitted, although Dave has never had an FDX. We powered the MTX up, and apart from a fairly severe case of keyboard bounce it ...
by Bill B
29 Oct 2023 09:13
Forum: MEMOFEST 2023
Topic: Memofest 2023, Where and When?
Replies: 53
Views: 3990258

Re: Memofest 2023, Where and When?

My "Production" MTX: 20231028_082411.jpg This was purchased new. Ever since buying the SDX this machine has been used almost exclusively with CP/M. That may partly because none of the documentation supplied by Memotech indicated that it could be used with ROM BASIC with USER commands to ac...
by Bill B
28 Oct 2023 22:20
Forum: MEMOFEST 2023
Topic: Memofest 2023, Where and When?
Replies: 53
Views: 3990258

Re: Memofest 2023, Where and When?

The kit awaiting attendees: 20231028_082346.jpg Dave Snowdon spent the day with me, joined by Mark Kinsley in the afternoon; 20231028_162821.jpg Joining virtually were Dave Stevenson, Martin Alcorn, Jim Wills & Claus Bækkel IWe also ran a demo of Bill's MTX webserver software, that allowed atten...
by Bill B
25 Oct 2023 08:20
Forum: HARDWARE
Topic: Strange behaviour
Replies: 9
Views: 15759

Re: Strange behaviour

Keyboard cable out of place by one pin?
by Bill B
11 Oct 2023 08:31
Forum: MEMOFEST 2023
Topic: Memofest 2023, Where and When?
Replies: 53
Views: 3990258

Re: Memofest 2023, Where and When?

Bill B wrote: 24 Sep 2023 08:33 I am less than 50 miles North-East of London, and a 10 minute taxi ride from the nearest mainline station.