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by Dave
Sun Aug 20, 2017 11:20 pm
Forum: Hardware
Topic: Connecting the QL to modern TVs
Replies: 9
Views: 317

Re: Connecting the QL to modern TVs

It's not latency that causes the problem, but the sheer bandwidth of writes to video RAM is huge.
by Dave
Sun Aug 20, 2017 7:17 pm
Forum: Hardware
Topic: Connecting the QL to modern TVs
Replies: 9
Views: 317

Re: Connecting the QL to modern TVs

The ZX-HD works well and decodes and copies writes to video RAM, which is a tiny area run at slow speed in the ZX80/81. I have high hopes the Pi could do this, but Nasta is unequivocal - the Pi GPIO isn't fast enough. It might well be on the Pi4, as that is one area that didn't really improve betwee...
by Dave
Sun Aug 20, 2017 5:49 pm
Forum: Hardware
Topic: Connecting the QL to modern TVs
Replies: 9
Views: 317

Re: Connecting the QL to modern TVs

This is very expensive for what it is. The entire board has a value including design costs of maybe £15. There are a few ICs that can do RGB to composite/s-video but they for practical purposes just duplicate existing functionality the QL already has. We looked at this and decided it wasn't worth do...
by Dave
Wed Aug 16, 2017 10:49 pm
Forum: Hardware
Topic: Issue 8 and WiFi
Replies: 37
Views: 2235

Re: Issue 8 and WiFi

The card would run the TCP stack for you. You access it like a Hayes modem, tell it what IP you want to connect to, etc. It supports encryption for you too, and it would be programmable in its own right to extend its functionality. It has a dozen or so GPIO pins, dual core CPU and a good chunk of R...
by Dave
Wed Aug 16, 2017 10:48 pm
Forum: Hardware
Topic: Issue 8 and WiFi
Replies: 37
Views: 2235

Re: Issue 8 and WiFi

MartynHill wrote:That works for me and opens the possibility of some general purpose I/O as well.

I am interested. Any idea of eventual cost?

M.


A serial port version would come in around £40. An internal version would be technically cleaner and be around £60?

Wild guess.
by Dave
Tue Aug 15, 2017 9:09 pm
Forum: Hardware
Topic: Issue 8 and WiFi
Replies: 37
Views: 2235

Re: Issue 8 and WiFi

The card would run the TCP stack for you. You access it like a Hayes modem, tell it what IP you want to connect to, etc. It supports encryption for you too, and it would be programmable in its own right to extend its functionality. It has a dozen or so GPIO pins, dual core CPU and a good chunk of RA...
by Dave
Sat Aug 12, 2017 4:48 pm
Forum: Hardware
Topic: Issue 8 and WiFi
Replies: 37
Views: 2235

Re: Issue 8 and WiFi

It's been a slow and unproductive week. Mostly, because a large limb of a neighbor's tree fell on my house in a storm. I've been clearing up the damage and making things habitable again - luckily it was the garage portion of the roof that got whacked. So, I am one week behind now. Meanwhile, is ther...
by Dave
Wed Aug 09, 2017 5:12 pm
Forum: Software & Programming
Topic: SMSQ/E for the QL?
Replies: 42
Views: 5585

Re: SMSQ/E for the QL?

Yay!
by Dave
Tue Aug 08, 2017 4:52 pm
Forum: QL Emulation
Topic: RE: Q-Menu V 8.02 Adding oblects on QLE/QDT
Replies: 2
Views: 239

Re: RE: Q-Menu V 8.02 Adding oblects on QLE/QDT

Simon?

How about you tell us your story. How did you get into the QL? What do you use it for? What's your life been like?

Most of us got these things in the mid-80s and have had pretty adventurous lives.
by Dave
Mon Aug 07, 2017 9:16 pm
Forum: Software & Programming
Topic: Best QL UK ROM
Replies: 6
Views: 453

Re: Best QL UK ROM

That may well be, The MG ROM machine I worked on had GI-labelled non-windowed ROMs. I don't know what that means.

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