I've borked it

Discussions about Sinclair ZX80 and ZX81 Hardware
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msknight
Posts: 386
Joined: Fri Dec 15, 2023 8:26 pm
Location: Sussex, UK

Re: I've borked it

Post by msknight »

MyRetroStore is now closed for three weeks.

Is there any alternative for 16k internal ram expansion for the zeddy please?
Lardo Boffin
Posts: 2173
Joined: Sat Nov 26, 2016 2:42 am

Re: I've borked it

Post by Lardo Boffin »

I just use one of these and a socket. I get them from Mark at RetroClinic:

IMG_5847.jpeg

You do need to ‘tune’ them with a capacitor for hires. There is a post somewhere about it.
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
User avatar
msknight
Posts: 386
Joined: Fri Dec 15, 2023 8:26 pm
Location: Sussex, UK

Re: I've borked it

Post by msknight »

Thanks. He hasn't got any in his shop, so I'll grab some from Mouser.

I'm aware of the capacitor mod for hi-res, so I'm good to go.

Now what I'm going to do with these other RAM chips... will they go well with a piece of battered cod?
Lardo Boffin
Posts: 2173
Joined: Sat Nov 26, 2016 2:42 am

Re: I've borked it

Post by Lardo Boffin »

I always just email Mark directly about the chips. I don’t know if he lists them in his shop.

Anything goes well with battered cod if you add enough salt.
ZX80
ZX81 iss 1 (bugged ROM, kludge fix, normal, rebuilt)
TS 1000 iss 3, ZXPand AY and +, ZX8-CCB, ZX-KDLX & ChromaSCART
Tatung 81 + Wespi
TS 1500 & 2000
Spectrum 16k (iss 1 s/n 862)
Spectrum 48ks plus a DIVMMC future and SPECTRA
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