Search found 182 matches

by stephen_usher
Sun Jan 12, 2020 9:29 am
Forum: The Off-Topic Section
Topic: Happy Birthday!
Replies: 214
Views: 71996

Re: Date formats

And then... there's the big-endian numeric variants which have the year first, either two or four digits. With the full year number it's completely unabiguous to the point where separators can be omitted, e.g. ISO 8601
by stephen_usher
Wed Dec 04, 2019 3:55 pm
Forum: Hardware
Topic: AMPEX Terminal 210
Replies: 1
Views: 222

Re: AMPEX Terminal 210

It's just an RS232 DTE device so you just need the correct cable.
by stephen_usher
Mon Dec 02, 2019 7:24 pm
Forum: Hardware
Topic: Issue Tx boards discussions
Replies: 44
Views: 2845

Re: Issue Tx boards discussions

[ That would also make it fully compatible to Q40, Q60 and Q68. Still I'm reluctant to recommend the PC pinout - I understand the Tx as a strict retro board, so it makes some sense to keep original QL equipment like printers, printer interfaces or QL-taylormade serial cables directly usable. Were t...
by stephen_usher
Sat Nov 30, 2019 11:03 pm
Forum: Hardware
Topic: Issue Tx boards discussions
Replies: 44
Views: 2845

Re: Issue Tx boards discussions

Maybe if you asked Charles Ingley (@Bloodnok) nicely he could look into it?

Of course, someone would have to give him a complete functional spec. for each device.
by stephen_usher
Fri Nov 29, 2019 11:03 pm
Forum: Hardware
Topic: Issue Tx boards discussions
Replies: 44
Views: 2845

Re: Issue Tx boards discussions

That's incredible! So let me get this straight... this is basically intended as a replacement motherboard product? It will technically be about the same spec-wise as the original (but with proper D-SUB added, better video out and more convenient power requirements) but you'll still need to use your...
by stephen_usher
Tue Nov 26, 2019 10:04 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 7885

Re: Bad Apple demos

Hi Stephen, Really excellent work, getting the demo to run on a QL. Could an API be written to load in video files? Well, the code is written with the idea of being more flexible. The encoder program is actually a generic encoding function with a debugging main() calling it with specific parameters...
by stephen_usher
Tue Nov 26, 2019 2:31 pm
Forum: Hardware
Topic: "New" SD interface
Replies: 12
Views: 975

Re: "New" SD interface

VERY GOOD !!!! I use QL-SD with SuperGoldCard ... It would be nice to allow the use of this interface also for SGC owners. Or including this feature in the new SCG ;) M. Hear! Hear! All that memory and CPU power hobbled by the storage. Tetroid, did you ever think of having a separate FPGA/microcont...
by stephen_usher
Mon Nov 25, 2019 6:04 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 7885

Re: Bad Apple demos

OK, file updated with proper m4v.h file, anyway, here's how the music works: The decoder uses the following value to IPC note table: int pitch_table[] = { 41, /* A */ 38, /* A# */ 36, /* B */ 33, /* Middle C */ 31, /* C# */ 28, /* D */ 26, /* D# */ 24, /* E */ 22, /* F */ 20, /* F# */ 19, /* G */ 17...
by stephen_usher
Mon Nov 25, 2019 3:41 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 7885

Re: Bad Apple demos

Bother! I forgot to update the include/m4v.h file in the source archive so I can't post the musical notes look-up table. I'll have to fix that when I get home.
by stephen_usher
Mon Nov 25, 2019 3:38 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 105
Views: 7885

Re: Bad Apple demos

OK, I have music now, but it really shows up the variable frame rate. OK, that is actually pretty cool :-) Especially considering that it's still written in C. While it's pretty hard to beat modern compilers with hand-written assembly code XTCC is non-optimizing and the code will always be slower t...