Search found 429 matches

by Martin A
20 Dec 2013 18:38
Forum: PROGRAMMING
Topic: Source of Confusion
Replies: 1
Views: 1538

Source of Confusion

Those of you that have copies of the Source, it it me, or has Keith got the sound volume control bytes all confused on page 11-5 ? Shouldn't it be 080h OR'd with 010h 030h 050h and 070h to make 090h 0B0h 0D0h and 0F0h to identify the sound register, which is then added or OR'd to the volume to get t...
by Martin A
19 Dec 2013 01:17
Forum: REMEMOrizer
Topic: Case/Extension Cable?
Replies: 10
Views: 3417

Re: Case/Extension Cable?

Obviously, I'm used to seeing chunks of random electronics hanging off the side of my MTX.

However, I was wondering, how well would a re-memorizor fit into one of the SDX cases.

Could be used as a sort of template for a case ???
by Martin A
17 Dec 2013 21:58
Forum: OFF TOPIC
Topic: What other retro machines do you have?
Replies: 26
Views: 7334

Re: What other retro machines do you have?

Fignition probably is even newer, but very retro.

Think Jupiter Ace with 80% of the keyboard missing.

Good soldering practice though

http://uk.rs-online.com/web/p/single-bo ... s/7755003/
by Martin A
17 Dec 2013 21:36
Forum: OFF TOPIC
Topic: What other retro machines do you have?
Replies: 26
Views: 7334

Re: What other retro machines do you have?

Hmm looking at the lists posted, admittedly its a small sample. But should this be re-named as an MTX and BBC forum ? :mrgreen:
by Martin A
15 Dec 2013 00:49
Forum: OFF TOPIC
Topic: What other retro machines do you have?
Replies: 26
Views: 7334

Re: What other retro machines do you have?

Ok, here goes the list is not quite as comprehensive. Z80 based: 16k ZX80 (2 both home made, one with a full size keyboard, one with mini switches) 48k ZX81 48K Spectrum plus Tatung Einstein (3" and 3.5" floppies) MTX500 (2 of only one PSU though) 6502 based: 42k Vic 20 Commodore 64C Atari 800XL BBC...
by Martin A
14 Dec 2013 21:19
Forum: HARDWARE
Topic: Help with repair
Replies: 50
Views: 12294

Re: Help with repair

Looking a the black capacitor, I don't much like the look of the joint of the "top" leg.
by Martin A
13 Dec 2013 11:40
Forum: MAGROM
Topic: Who wants a MAGROM board?
Replies: 21
Views: 7481

Re: Who wants a MAGROM board?

There's an nice bonus that comes with using your mods to the circuit. I don't need to store the extra 3 shadow copies of the ROM 7 code that were required to "fix" the original prototype. That's 24k more game space! I've currently got 38 games squeezed in, it's now just about reached the limits of o...
by Martin A
08 Dec 2013 18:51
Forum: MAGROM
Topic: Who wants a MAGROM board?
Replies: 21
Views: 7481

Re: Who wants a MAGROM board?

V5 is built and lightly tested, it seems to be working fine. It's now down to 6 chips. It has all of Mark's suggestions implemented, plus *grom instead of the 74xx138 doing rom 7 detection. The MTX500 I tested it on has one of Andy's Rememorizor PAL's fitted, but that shouldn't make any difference. ...
by Martin A
06 Dec 2013 11:50
Forum: GENERAL DISCUSSIONS
Topic: It's a bit quiet in here...
Replies: 3
Views: 1488

Re: It's a bit quiet in here...

Aye, well Dave has me slaving away over the MAGROM software.

Maybe he'll allow me a few days rest before making me start on the V5 prototype :)
by Martin A
03 Dec 2013 00:26
Forum: GENERAL DISCUSSIONS
Topic: "The Source" - Second Printing, now taking orders . . . .
Replies: 12
Views: 4268

Re: "The Source" - Second Printing, now taking orders . . .

I'm still interested. Same deal as before?