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Yet another ROM adapter

Posted: Sat Dec 16, 2017 3:12 am
by mooredan
This handles standard 27128 and 27256 pinouts, plugs into the 24pin ROM socket (don't know if it still fits in the case, but if it doesn't, I sure that soldering the adapter in place of the socket, things will fit).

First thought about a perfboard solution, but then found that PCB manufacturing is really cheap nowadays. I got 10 of these for $4.95 + $18 shipping from China:

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Loaded "Shoulders of Giants", Forth and original ROMs onto a 27256 and tested -- all is well.

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My plan is to run A13 over to the board and start filling up the extra 8KB with useful routines, like a device driver for a CF storage (lofty ideas).

Re: Yet another ROM adapter

Posted: Sat Dec 16, 2017 7:03 pm
by Lardo Boffin
Awesome. When can I buy one? :shock:

Re: Yet another ROM adapter

Posted: Sun Dec 17, 2017 12:07 am
by mooredan
Now. A bare board is available immediately. $4 plus shipping (which could be really cheap if you're in the U.S. -- I'll just throw it in an envelope 1st class mail).

Re: Yet another ROM adapter

Posted: Sun Dec 17, 2017 2:00 am
by dessony
Mooredan,

from an American to an American! :)

How do I pay you for the ROM adapter? Please PM me.

Dessony.

Re: Yet another ROM adapter

Posted: Sun Dec 17, 2017 9:16 am
by Lardo Boffin
mooredan wrote:
Sun Dec 17, 2017 12:07 am
Now. A bare board is available immediately. $4 plus shipping (which could be really cheap if you're in the U.S. -- I'll just throw it in an envelope 1st class mail).
Am in the UK so I suspect it will get expensive!

Re: Yet another ROM adapter

Posted: Sun Dec 17, 2017 12:47 pm
by 1024MAK
As I'm interested as well, can I suggest that two boards be sent to one of us. Based on other bare PCBs that I have received, I estimate the cost to be less than $5 postage to the UK. Then once they are in the UK, we can mail them between ourselves.

Mark

Re: Yet another ROM adapter

Posted: Sun Dec 17, 2017 9:11 pm
by mooredan

Re: Yet another ROM adapter

Posted: Mon Dec 18, 2017 10:27 pm
by dessony
This adapter also will work with the TS1500! :D

Dessony

Re: Yet another ROM adapter

Posted: Wed Dec 20, 2017 9:54 am
by rune
Id be i8nterested in two boards if they are still available.

I followed the link below but the Buy Now button just took me to my Paypal account. Could you advise of total cost inc. shipping to the UK?
Dave

Re: Yet another ROM adapter

Posted: Wed Dec 20, 2017 10:06 am
by sirmorris
Very nice. I make it 4 people interested from the UK as I'm now throwing my hat into the ring too - should we organise a group buy to save on postage?

*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?