Search found 10 matches
- Mon Apr 15, 2019 8:15 pm
- Forum: Sinclair Misc
- Topic: Jupiter ACE (again)
- Replies: 123
- Views: 107111
Re: Jupiter ACE (again)
Hi.Claudius. Could you share the Gerber's. I want to order a couple in case I need this one up soldering. I shouldn't though. But me eye sight not as great as when I was younger.
- Wed May 16, 2018 9:34 am
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 40752
Re: zx spectrum in zx81 case
Got an oscilloscope now. Shall try as detailed above.
- Fri May 11, 2018 9:41 pm
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 40752
Re: zx spectrum in zx81 case
Zx max 48 still has the weird picture.
Ive completely rewired the lead . The j4 is connected 2-3 and replaced the 74 ic with a philips 74hcu type and still the same.
The rgb signal is it pal or ntsc ? Or does it not work like that.
I dont have the AD chip fitted.
Ive completely rewired the lead . The j4 is connected 2-3 and replaced the 74 ic with a philips 74hcu type and still the same.
The rgb signal is it pal or ntsc ? Or does it not work like that.
I dont have the AD chip fitted.
- Sat May 05, 2018 2:30 am
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 40752
Re: zx spectrum in zx81 case
Ordered some Philips 74HCU04's
- Fri May 04, 2018 11:15 pm
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 40752
Re: zx spectrum in zx81 case
Ive completely replaced all the ic's except the cpld. I'll try the 14mhz crystal as you said.
- Fri May 04, 2018 10:11 pm
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 40752
Re: zx spectrum in zx81 case
I've swapped out the 7404 for a 74HCT04 from my spare clock board of a RC2014 setup. Same picture.
My 62256 rams are 100 speed and not 55 would this make a difference.
I took out the zx rom and still have the same picture.
I'll list out all the ic's and makes.
My 62256 rams are 100 speed and not 55 would this make a difference.
I took out the zx rom and still have the same picture.
I'll list out all the ic's and makes.
- Fri May 04, 2018 2:06 am
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 40752
- Fri May 04, 2018 1:55 am
- Forum: Hardware
- Topic: zx spectrum in zx81 case
- Replies: 63
- Views: 40752
Re: zx spectrum in zx81 case
Finally have partly built the Zx Max 48, but when powered up i get a weird display i dont have the surface mount AD chip fitted, im running off the rgb. what is the minimum cable wiring for rgb, i dont have all the grounds connected in the scart plug, only one connected to pin 18. Can anyone help wi...
- Sat Jul 01, 2017 11:01 am
- Forum: Hardware
- Topic: New ZX81 16K SRAM modules available soon from ZX ZIGG
- Replies: 8
- Views: 3817
Re: New ZX81 16K SRAM modules available soon from ZX ZIGG
Wow, does it need any modifications to enable wilf richter hires routines to work ?
- Sun May 14, 2017 6:32 pm
- Forum: Development
- Topic: Minstrel ZX80 Clone
- Replies: 12
- Views: 6395
Re: Minstrel ZX80 Clone
I've built one. Everything works, except. Igot this black band on the left, as though extra screen. I'm using a 6.55 mhz crystal. May be its that. Thanks. Any ideas David Hi all, I'm curious if anyone here has built one of these yet? I was thinking about ordering a pcb to test it out. Best, -mark