Search found 2410 matches

by Dave
Sun Nov 17, 2019 3:28 pm
Forum: Hardware
Topic: Found Original Psion USA Cartridges
Replies: 11
Views: 316

Re: Found Original Psion USA Cartridges

The US versions of these programs were reconfigured for a lower resolution screen, and I think that was the only difference.
by Dave
Sat Nov 16, 2019 10:09 pm
Forum: Hardware
Topic: Issue 8 discussions...
Replies: 128
Views: 14705

Re: Issue 8 discussions...

I'm around.

Not really feeling it so far this season. Just dealing with life is using me all up.

I'll keep you posted it anything changes.
by Dave
Sun Sep 29, 2019 8:11 pm
Forum: Hardware
Topic: Oki Dot Printer
Replies: 6
Views: 462

Re: Oki Dot Printer

Those printers are quite advanced. It could be a number of things. It defaults to IBM mode and needs setting to Epson mode. It defaults to bidirectional parallel and can be set to input only (it can hang if it sends a job complete message and gets no response) The QL may not be "ending" pr...
by Dave
Thu Sep 26, 2019 12:01 am
Forum: Hardware
Topic: DIY Fpu Unit for STFM
Replies: 28
Views: 3823

Re: 74HCxx vs 74LSxx

The red CPU sockets Sinclair used in QLs are really terrible. They will not reliably support any sort of daughter card at all. More than half of the problems with intyernal memories that used that socket were because of the socket. It would definitely be more reliable (and easier!) to put the CPU an...
by Dave
Tue Sep 03, 2019 9:37 pm
Forum: Hardware
Topic: Issue 8 discussions...
Replies: 128
Views: 14705

Re: Issue 8 discussions...

Sorry guys. I don't work in the summer. Nasta finished the design. I'll be back on it when it cools down.
by Dave
Fri Aug 02, 2019 10:39 pm
Forum: Hardware
Topic: Issue 8 discussions...
Replies: 128
Views: 14705

Re: Issue 8 discussions...

AKA fun times. :D

It’s a cycle you’ve followed for years. I follow a similar cycle.

I will be away for a whole year in 2021 o 2022. Just setting expectations.
by Dave
Thu Aug 01, 2019 7:37 pm
Forum: Hardware
Topic: Issue 8 discussions...
Replies: 128
Views: 14705

Re: Issue 8 discussions...

And summer arrived. Nasta always goes radio silent all summer, and I have summer stuff to do!

See you when the nights get shorter!
by Dave
Sun Jul 14, 2019 7:56 pm
Forum: Hardware
Topic: Issue 8 discussions...
Replies: 128
Views: 14705

Re: Issue 8 discussions...

Things are going slow right now.

I'm investigating a couple of low level decisions about the video system. I'm not really happy with any of the options that have been presented to me, or any I have devised myself. I'm still noodling it out.
by Dave
Thu Jul 04, 2019 6:02 pm
Forum: Software & Programming
Topic: Starting programming.....
Replies: 6
Views: 1067

Re: Starting programming.....

I always just used flat files or linked lists. It's not like a QL program usually has complex data requirements. I personally prefer flat files. They occupy more memory, but they are quicker to index and easier to save/load only the specific entries you want if each record set starts on a ^2 boundary.