Search found 2478 matches

by Dave
Sun Jan 22, 2012 6:04 pm
Forum: Hardware
Topic: Faster/wider CPU...
Replies: 134
Views: 34878

Re: Faster/wider CPU...

The EC and HC variants both do that. I can, however, obtain EC variants for less than half the cost of a similarly clocked HC. I'm curious if there's a simple way to have a faster CPU than the 7.5MHz of the 68008, and/or if there's a simple way to have wider memory accesses, and still use the onboar...
by Dave
Sat Jan 21, 2012 5:20 pm
Forum: Hardware
Topic: Faster/wider CPU...
Replies: 134
Views: 34878

Re: Faster/wider CPU...

To clarify, I'm looking at the 68EC000. I like the idea of a 16MB QL, and there's a faster 10 MHz part as well as the 8 MHz part. Can of worms, I know, I know... :)
by Dave
Sat Jan 21, 2012 4:29 pm
Forum: Hardware
Topic: Faster/wider CPU...
Replies: 134
Views: 34878

Faster/wider CPU...

I know that Gold Cards, etc use much trickery to make a 68020or 68040 forget who they are and pretend to be a 68000.However, there are faster 68000 and 68008 processors that should easily interface with the existing design without the great trickery of the Gold Card designs... Does anyone have any t...
by Dave
Thu Jan 19, 2012 10:04 pm
Forum: Hardware
Topic: GC/SGC battery replacements...
Replies: 6
Views: 2947

Re: GC/SGC battery replacements...

After early testing, everything is electrically sound, but there are two mechanical issues: 1. The pins I selected are just fractionally too small for the turned sockets on some GCs and SGCs. 2. The style of battery holder I purchased isn't ideal - they are right on the dimensional limits, and when ...
by Dave
Sun Jan 15, 2012 9:36 pm
Forum: The Welcome Area
Topic: Sparrowhawk
Replies: 27
Views: 13621

Re: Sparrowhawk

Eeep! Brittle! Be careful Dilwyn!
by Dave
Sun Jan 15, 2012 5:59 pm
Forum: Hardware
Topic: GC/SGC battery replacements...
Replies: 6
Views: 2947

Re: GC/SGC battery replacements...

My understanding is that a sticker is acceptable, but the CE is supposed to be part of the fabric of the device. I believe most will sell into industrial applications as these batteries were used mostly in industrial automation systems, so it matters that it's right.
by Dave
Sat Jan 14, 2012 10:57 pm
Forum: Hardware
Topic: So I bought some QL scrap
Replies: 12
Views: 5053

Re: So I bought some QL scrap

That's not scrap by any means.

I see a lot of good components and donor parts there that can keep other QLs going...
by Dave
Sat Jan 14, 2012 5:42 pm
Forum: Hardware
Topic: GC/SGC battery replacements...
Replies: 6
Views: 2947

GC/SGC battery replacements...

Hi folks, It's been a LONG time without an update. I have assembled a few of the first battery replacements and am testing them now to make sure they meet all dimensional, operational and materials requirements. Unfortunately, the PCB house didn't put the CE logo on them as was required/requested, s...
by Dave
Sat Jan 14, 2012 12:47 am
Forum: For Sale
Topic: Sandy QXt-640 revived
Replies: 6
Views: 2826

Re: Sandy QXt-640 revived

As I recall, we only used Mitsumi/Mitsubishi(?) and Citizen mechanisms in the QXT if that's any help.
by Dave
Fri Jan 13, 2012 5:03 am
Forum: General QL Chat
Topic: Why was the QL never successful?
Replies: 38
Views: 15134

Re: Why was the QL never successful?

I think these were problems with the hardware design, but they didn't play a part in the failure of the machine in the marketplace. Sinclair launched the QL as a firmly "business" machine but did not understand some aspects of that market, versus the market he dominated. For example, he re...