Search found 1557 matches

by Andy Rea
Sat Sep 21, 2019 10:36 pm
Forum: Hardware
Topic: PRYNT, POKU, bad ROM or ULA in TS1000?
Replies: 15
Views: 3539

Re: PRYNT, POKU, bad ROM or ULA in TS1000?

IR=$1E00 R= %000* 0000 (*) Where the bit B4 is set to 1. 000* 0000 "(" 000* 0001 ")" 000* 0010 ">" 000* 0011 "<" 000* 0100 "=" 000* 0101 "+" 000* 0110 "-" 000* 0111 "*" 000* 1000 "/" 000* 1001 ";" 000* 1010 "," 000* 1011 "." 000* 1100 "0" 000* 1101 "1" 000* 1110 "2" 0001 1111 "3" 0001 0000 "(" 0001...
by Andy Rea
Fri Sep 20, 2019 1:26 pm
Forum: Hardware
Topic: PRYNT, POKU, bad ROM or ULA in TS1000?
Replies: 15
Views: 3539

Re: PRYNT, POKU, bad ROM or ULA in TS1000?

bad connection on the alternative address lines from the ULA ? if everything else appears to be working then no fault on data lines or adderess lines from cpu to rom / ram. try doing this 10 for t=0 to 63 20 print chr$(t); 30 next t and run it.... or just type "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" ...
by Andy Rea
Tue Sep 03, 2019 4:35 pm
Forum: Development
Topic: RVC video encoder
Replies: 13
Views: 3753

Re: RVC video encoder

My UDG arrived quickly (thanks Andy!) and just go this up and running at lunch time. Amazing stuff! Really impressive and a great way to showcase what the humble zeddy can do. 8-) LOL reminded me i hadn't even marked it as sent nor entered the tracking number on paypal :lol: Glad it arrived quickly...
by Andy Rea
Sat Aug 24, 2019 9:33 pm
Forum: Development
Topic: Advances in retro video compression
Replies: 9
Views: 2647

Re: Advances in retro video compression

Moggy wrote:
Sat Aug 24, 2019 9:08 pm
This is superb work and I cannot wait for the encoder to see the light of day as I will have some serious fun with that.
Do we need to ask the admin for a password protected 18+ area :lol:
by Andy Rea
Sat Aug 24, 2019 9:31 pm
Forum: Development
Topic: Advances in retro video compression
Replies: 9
Views: 2647

Re: Advances in retro video compression

WOW i am blown away... Fabulous work, this is truly amazing something that was only a dream before today full screen hi-res ( of sorts ) full speed video on ZX81... ARE YOU FREAKING KIDDING ME !!!! Damn this should win some sort of award. Running on real hardware B+W CRT monitor viewed from 6 or 7 f...
by Andy Rea
Fri Aug 16, 2019 3:38 pm
Forum: SALES
Topic: ZX81 ULA
Replies: 76
Views: 37984

Re: ZX81 ULA

Hi..... the link puts a 75 Ohm load resistor into across the output path. it is meant for oddball monitors that have hi impedance inputs. i highly doubt that any damage could occur if the link is set wrong. you most likely will get a wobbly image. as the monitor will not be able to "lock" onto the s...
by Andy Rea
Wed Aug 14, 2019 5:42 pm
Forum: SALES
Topic: I missed the hot cakes...
Replies: 26
Views: 9114

Re: I missed the hot cakes...

Yes they went rather faster than i expected... will have more soon.

I've ordered one of Charley Ingleys ULA looks like a fabulous bit of kit.

Regards Andy
by Andy Rea
Mon Jun 03, 2019 7:35 pm
Forum: SALES
Topic: ZX81 ULA
Replies: 76
Views: 37984

Re: ZX81 ULA

well i have ordered more chips :D so thats one less task...

Andy
by Andy Rea
Sun Jun 02, 2019 7:46 pm
Forum: SALES
Topic: ZX81 ULA
Replies: 76
Views: 37984

Re: ZX81 ULA

Hi papalapa,

not really sure, lots of personal things going off right now, so little time left to devote to the hobby.

hopefully but no promise sometime in the next few weeks

regards Andy
by Andy Rea
Mon May 06, 2019 8:57 pm
Forum: Hardware
Topic: TS 1000 artifacts after warming up
Replies: 14
Views: 2202

Re: TS 1000 artifacts after warming up

Just one more thing.. the transistor composite mod inside the modulator housing... remove or bypasss it. thie signal from the ULA should go direct to the output socket on the modulator. it doesn't need buffering. @Mark yes got a 26Mhz osc module on board... the really 2011 ULA i did had a sort of co...