Search found 538 matches

by 1024MAK
Thu Jun 06, 2019 3:17 pm
Forum: General QL Chat
Topic: Game Over !
Replies: 6
Views: 548

Re: Game Over !

I see that you have got over your bent pin and have now gone brittle :mrgreen:

Mark
by 1024MAK
Thu Jun 06, 2019 3:12 pm
Forum: Wanted
Topic: Sinclair QL Power Supply
Replies: 5
Views: 263

Re: Sinclair QL Power Supply

keyboardjunkie wrote:Oh, and I take it that this will work on 240/50hz in the UK with a mains plug change?

Thanks,

Mark.

Yes :D

Mark
by 1024MAK
Mon Jun 03, 2019 10:34 pm
Forum: Hardware
Topic: Asymmetric multiprocessing...
Replies: 71
Views: 2875

Re: Asymmetric multiprocessing...

So, just out of interest, what term or name do the QL community use to describe the original Sinclair QL which after all already has two processors as standard (the main 68008 and the IPC/Intel 8049 microcontroller)? To be fair, the IPC and 8049 can not be reprogrammed by the system, cannot run use...
by 1024MAK
Mon Jun 03, 2019 10:08 pm
Forum: Hardware
Topic: Asymmetric multiprocessing...
Replies: 71
Views: 2875

Re: Asymmetric multiprocessing...

@Nasta I have never said that a system using dual port RAM should not be considered. In fact shared memory systems have been around for a long time. They just used very careful control and timing as years ago dual port RAM was very expensive. Various 1980s computers either use shared memory for IO d...
by 1024MAK
Mon Jun 03, 2019 3:40 pm
Forum: Hardware
Topic: Symmetric multiprocessing...
Replies: 52
Views: 2224

Re: Symmetric multiprocessing...

Going in the other direction... See the other thread :?

Mark
by 1024MAK
Mon Jun 03, 2019 3:38 pm
Forum: Hardware
Topic: Asymmetric multiprocessing...
Replies: 71
Views: 2875

Re: Asymmetric multiprocessing...

So, just out of interest, what term or name do the QL community use to describe the original Sinclair QL which after all already has two processors as standard (the main 68008 and the IPC/Intel 8049 microcontroller)? If an intelligent internet interface system is added, it would then have three proc...
by 1024MAK
Mon Jun 03, 2019 3:21 pm
Forum: Hardware
Topic: Asymmetric multiprocessing...
Replies: 71
Views: 2875

Re: Asymmetric multiprocessing...

I don’t think there will be very much interest in this subject unless some software is developed that makes good use of the concept - a killer app so to speak. But anyway... The documentation clearly shows that the Acorn Tube is designed around using the BBC operating system, and this extends down t...
by 1024MAK
Tue May 28, 2019 4:47 pm
Forum: Hardware
Topic: RGB to SCART Video * solved *
Replies: 17
Views: 1127

Re: RGB to SCART Video * solved *

TV standard CRT monitors just need some adjustments or modifications to the horizontal time base circuitry. Of course, this is easier said than done on most of them. *Some* LCD monitors that can handle TV standard video have nearly enough adjustments. TVs often don’t have any provision for any adjus...
by 1024MAK
Mon May 27, 2019 8:29 pm
Forum: Hardware
Topic: QL Case Heat Warp
Replies: 11
Views: 489

Re: QL Case Heat Warp

I can’t answer the question of overall sales, but of the QLs that I have (five cased, and some that are just PCBs) they are a mixture of issue 5 and issue 6 boards as far as I know. But then I only got interested in them In 2011... I think somewhere on this forum I posted a picture of a QL circuit b...
by 1024MAK
Sat May 25, 2019 6:56 am
Forum: General QL Chat
Topic: What makes the OS for QL any better, different, unique ?
Replies: 24
Views: 1484

Re: What makes the OS for QL any better, different, unique ?

How are we defining multitasking? Only the Sinclair ZX81 could be described as a very limited multitasking system because in normal (slow) mode the CPU was constantly (as far as the user was concerned) switching between running the users program and generating the serial data stream to maintain a st...