Search found 67 matches

by stephen_usher
Tue Jan 08, 2019 9:12 pm
Forum: General QL Chat
Topic: The QL and the 16 bit revolution.
Replies: 1
Views: 517

The QL and the 16 bit revolution.

It's well known that the QL played quite a big role in the development of the Commodore Amiga's operating system as Metacomco was contracted to create AmigaDOS 1.0 and did so on QLs using their BCPL compiler. (It was a recreation of Tripos, an OS written in BCPL which originated in Cambridge.) Howev...
by stephen_usher
Tue Jan 08, 2019 5:55 pm
Forum: Hardware
Topic: Current availability of replacement Microdrive faam/felt?
Replies: 5
Views: 723

Current availability of replacement Microdrive faam/felt?

Does anyone have a pointer to a source for a suitable replacement foam/felt for Microdrive cartridges?

Some time ago I obtained some 8 track self-adhesive felt but it wasn't dense enough so that when it was cut into the required 4mm x 2mm x 4mm block it just fell apart.
by stephen_usher
Fri Nov 30, 2018 7:05 pm
Forum: The Off-Topic Section
Topic: QL Jokes
Replies: 29
Views: 3333

Re: QL Jokes

There once was a man called Tebby,
Who's OS was not at all heavy.
Its toolkit was weak,
So he gave it a tweek,
And made everyone quite happy.
by stephen_usher
Tue Nov 27, 2018 10:14 pm
Forum: Hardware
Topic: Q68 speed vs 680X0
Replies: 40
Views: 4397

Re: Q68 speed vs 680X0

On an Atari TT030 (30MHz 68030) it takes 127 seconds. Unfortunately SMSQ/E doesn't run in fast RAM so I can't test it with the uncontended EDO RAM only the slow RAM shared with the video sub-system. Hi Stephen, Are you using QVME in the TT030? No, just the Atari SMSQ/E downloaded from the developme...
by stephen_usher
Tue Nov 27, 2018 8:29 pm
Forum: Hardware
Topic: Q68 speed vs 680X0
Replies: 40
Views: 4397

Re: Q68 speed vs 680X0

On an Atari TT030 (30MHz 68030) it takes 127 seconds.

Unfortunately SMSQ/E doesn't run in fast RAM so I can't test it with the uncontended EDO RAM only the slow RAM shared with the video sub-system.
by stephen_usher
Mon Nov 19, 2018 10:22 pm
Forum: Hardware
Topic: SGC successor brainstorming
Replies: 89
Views: 9406

Re: SGC successor brainstorming

So, replacing the video completely should mean that there's no need to directly access the QL memory at all. Not memory as storage, but memory mapped I/O. The QL's address and data bus would still be there and access in the internal QL register area, so keyboard, speaker, network and microdrives ca...
by stephen_usher
Mon Nov 19, 2018 6:36 pm
Forum: Hardware
Topic: SGC successor brainstorming
Replies: 89
Views: 9406

Re: SGC successor brainstorming

So, replacing the video completely should mean that there's no need to directly access the QL memory at all. This would mean that you could completely decouple the QL's address and data bus from the new computer, either accessing the hardware via a proxy I/O controller or turning the QL's 68008 into...
by stephen_usher
Mon Nov 19, 2018 8:34 am
Forum: Hardware
Topic: SGC successor brainstorming
Replies: 89
Views: 9406

Re: SGC successor brainstorming

..Maybe this is being looked at from the wrong direction? Maybe we should thing in reverse and think of the original QL as a peripheral to a new single-board computer which fits within the expansion slot? It sounds like it's possibly a simpler solution to all the bottlenecks of the original system....
by stephen_usher
Sun Nov 18, 2018 9:58 am
Forum: Hardware
Topic: SGC successor brainstorming
Replies: 89
Views: 9406

Re: SGC successor brainstorming

Having read all the comments, including that interesting long one above, maybe it would be best to have something revolutionary. As far as I see it, the main reason for an SGC replacement is that many wish to use an original, unmodified QL but add a massive upgrade. Maybe this is being looked at fro...
by stephen_usher
Fri Nov 16, 2018 7:44 pm
Forum: Hardware
Topic: SGC successor brainstorming
Replies: 89
Views: 9406

Re: SGC successor brainstorming

Basically, if it had all that the SGC(clone) has but add DVI/HDMI video output and an SD card interface (hard disk) that would be ample. No M680x0 processor will be fast relative to today's machines, so stick with the M68020 and the same clock rate. QDOS/Minerva/SMSQE after all are relatively lean a...