Search found 1518 matches
- Wed Feb 07, 2024 7:53 am
- Forum: Hardware
- Topic: EPROM suggestions
- Replies: 19
- Views: 1035
Re: EPROM suggestions
There are w27c512 eeproms with EPROM pinout that I often recommend. These can often be reprogrammed and about the waste: It's the question of price per piece and not 8k against 64k. If you only want to replace the original I advise to fill the 64k with 8 times the 8k. This way it doesn't matter at w...
- Fri Feb 02, 2024 11:00 am
- Forum: Hardware
- Topic: ZX-WESPI - add a cheap wifi-enabled fileserver to your Zeddy!
- Replies: 169
- Views: 46701
Re: ZX-WESPI - add a cheap wifi-enabled fileserver to your Zeddy!
There are 7 inch vga displays that are suitable
- Fri Feb 02, 2024 10:44 am
- Forum: Hardware
- Topic: ZX-WESPI - add a cheap wifi-enabled fileserver to your Zeddy!
- Replies: 169
- Views: 46701
Re: ZX-WESPI - add a cheap wifi-enabled fileserver to your Zeddy!
This is the display driver device name.
There are several display with various sizes available.
Make sure it's 320x240.
I have a 3.2 inch which is very readable and a joy to work with. I saw 3.5 inch, but not at a reasonable price.
There are several display with various sizes available.
Make sure it's 320x240.
I have a 3.2 inch which is very readable and a joy to work with. I saw 3.5 inch, but not at a reasonable price.
- Sat Jan 27, 2024 10:48 pm
- Forum: Sinclair Misc
- Topic: Spectrum Next Issue 2 Unboxing Video
- Replies: 28
- Views: 4384
Re: Spectrum Next Issue 2 Unboxing Video
I remember it well.
- Thu Jan 25, 2024 9:00 pm
- Forum: Development
- Topic: Oh no! Not another ULA.
- Replies: 79
- Views: 98424
Re: Oh no! Not another ULA.
Thanks for the update. Charlie already told me some weeks ago.
Please keep in touch.
And good luck for your personal circumstances.
Cheers
Paul
Please keep in touch.
And good luck for your personal circumstances.
Cheers
Paul
- Thu Jan 25, 2024 5:06 pm
- Forum: Sinclair Misc
- Topic: Spectrum Next Issue 2 Unboxing Video
- Replies: 28
- Views: 4384
- Thu Jan 25, 2024 4:59 pm
- Forum: Development
- Topic: Using WAIT signal?
- Replies: 3
- Views: 814
Re: Using WAIT signal?
That's not what /wait is intended for. I don't know what happens to all the other z80 control lines. If you try a /busreq and wait for busack then z80 goes into tristate and you can acces the ram in any way you like for as long as you like. Of course the screen will not be updated by the zeddy. That...
- Mon Jan 22, 2024 8:26 am
- Forum: Hardware
- Topic: Capacitor replacement
- Replies: 8
- Views: 1157
Re: Capacitor replacement
The ZX81 capacitor are not known to leak but they dry out.
They are unimportant so nothing breaks if they fail.
They are unimportant so nothing breaks if they fail.
- Mon Jan 22, 2024 6:28 am
- Forum: Hardware
- Topic: Capacitor replacement
- Replies: 8
- Views: 1157
Re: Capacitor replacement
The 1uF only needs replacing if you have a zeddy that needs more than a single try to start properly.
- Sun Jan 21, 2024 9:59 am
- Forum: Hardware
- Topic: Desoldering heat gun
- Replies: 9
- Views: 1188
Re: Desoldering heat gun
I have something like the first link you provided. But I never needed it. I also have the zd915 and use the following steps: First I apply flux gel Next I desolder every pin. Not from the top but horizontal. This way I can see what I'm doing and it's not necessary to work against gravity. After ever...