Yet another ROM adapter

Discussions about Sinclair ZX80 and ZX81 Hardware
rune
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Re: Yet another ROM adapter

Post by rune » Wed Dec 20, 2017 9:16 am

Hi Charlie, yes - Im happy with that. I would like two of them.

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Paul
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Re: Yet another ROM adapter

Post by Paul » Wed Dec 20, 2017 9:18 am

Or just publish the zip file with the Gerber inside so we could order in China instead of ordering from USA?
In theory, there is no difference between theory and practice. But, in practice, there is.

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Paul
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Re: Yet another ROM adapter

Post by Paul » Wed Dec 20, 2017 9:20 am

sirmorris wrote:
Wed Dec 20, 2017 9:06 am
*edit* having had a look around my usual suppliers I think the smt machined pin header might be an issue. Could you please tell us the brand/supplier or perhaps even supply the pins?
I use square ones instead of turned pin which are available from reichelt.de for example.
In theory, there is no difference between theory and practice. But, in practice, there is.

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sirmorris
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Re: Yet another ROM adapter

Post by sirmorris » Wed Dec 20, 2017 9:29 am

I have square pin strip. Unless the user intends to solder the adapter in place (a distinct possibility for me, actually) then the smaller turned pins are less destructive to any existing socket. Though considering the quality of Sinclair sockets a slight breeze might be enough to destroy them.
:lol:
--=== ZXpand+ ... A more moderner all-in-one upgrade solution for ZX81 ===--
* SD/MMC storage * 32K Hires-capable RAM * AY sound chip * Joystick port * Serial *
* BASIC enhancements - plug & play * Reset button * Auto-boot facility *

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Paul
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Re: Yet another ROM adapter

Post by Paul » Wed Dec 20, 2017 9:38 am

Lower profile is more important than the width of the pins. It doesn't matter what you insert into the socket, a normal IC will never have proper contact again.
In theory, there is no difference between theory and practice. But, in practice, there is.

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sirmorris
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Re: Yet another ROM adapter

Post by sirmorris » Wed Dec 20, 2017 9:39 am

That's true.
--=== ZXpand+ ... A more moderner all-in-one upgrade solution for ZX81 ===--
* SD/MMC storage * 32K Hires-capable RAM * AY sound chip * Joystick port * Serial *
* BASIC enhancements - plug & play * Reset button * Auto-boot facility *

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mooredan
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Re: Yet another ROM adapter

Post by mooredan » Wed Dec 20, 2017 5:29 pm

Hi all,

A full parts list and suppliers are in a table here:
http://dlmeng.suncup.net/zx81-ts1000-rom-adapter-pcb/

When ordering, I put in postage into the PayPal button for both shipping within the US and to the UK

There are currently 7 of these left.
Dan Moore
Portland, Oregon, USA

rune
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Re: Yet another ROM adapter

Post by rune » Wed Dec 20, 2017 6:37 pm

European guys, is there enough interest to buy the rest of Dans boards?

I'm happy to front the cash and We could sort out distribution and costs when they get here?


Update, I've been speaking to Dan as the link wasn't working for me. Result is I have bought 2 boards. Postage to UK is a very reasonable $2.33 - Probably as cheap or cheaper than buying a bulk lot and re posting within the UK.

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Paul
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Re: Yet another ROM adapter

Post by Paul » Wed Dec 20, 2017 8:53 pm

Yes. I'd like to have one as well.
If there were any more left I'd take the rest
You can send mine to Charlie, we will sort out the rest.
Kind regards Paul
In theory, there is no difference between theory and practice. But, in practice, there is.

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sirmorris
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Re: Yet another ROM adapter

Post by sirmorris » Wed Dec 20, 2017 8:56 pm

rune wrote:
Wed Dec 20, 2017 6:37 pm
Postage to UK is a very reasonable $2.33 - Probably as cheap or cheaper than buying a bulk lot and re posting within the UK.
Agreed.
--=== ZXpand+ ... A more moderner all-in-one upgrade solution for ZX81 ===--
* SD/MMC storage * 32K Hires-capable RAM * AY sound chip * Joystick port * Serial *
* BASIC enhancements - plug & play * Reset button * Auto-boot facility *

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