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Re: BBC Model B No2. Will it live again!
Posted: 17 May 2021 22:26
by rubber_jonnie
BennehBoy wrote: 17 May 2021 22:01
rubber_jonnie wrote: 17 May 2021 21:58
One thing that has kept me going throughout the whole covid thing is the generosity of the retro community 😁
Probably because we're all old buggers.
I'm certainly an old bugger :)
Re: BBC Model B No2. Will it live again!
Posted: 17 May 2021 23:25
by JezC
cmorley wrote: 17 May 2021 19:05
I did a Tube USB adapter which allows you to snoop the bus via the Tube then feed that in to hoglet's 6502 decoder to get an execution trace on a model B.
I think I have PCBs left. The FT232H modules are about £6-7 including delivery.
If you have some PCBs available, I'd be interested in one (which can go with your EPROM emulators when I finally work out how many of what I actually need... :roll: :? )
Re: BBC Model B No2. Will it live again!
Posted: 17 May 2021 23:42
by Tomswork
I had to burn a eprom for a macintosh classic the other day after spending all day looking for my uv lamp 🔦
But I did win
Tom
Re: BBC Model B No2. Will it live again!
Posted: 17 May 2021 23:45
by rubber_jonnie
cmorley wrote: 17 May 2021 19:05
I did a Tube USB adapter which allows you to snoop the bus via the Tube then feed that in to hoglet's 6502 decoder to get an execution trace on a model B.
I think I have PCBs left. The FT232H modules are about £6-7 including delivery.
Take a look at the stardot threads...
https://stardot.org.uk/forums/viewtopic ... 05#p198905
@cmorley
I'd definitely like a PCB, please, as well as one of your 64KB sideways EPROM kits too please. If you can let me know the total cost inc shipping by PM I'll Paypal you the funds.
I still have your details in Paypal so should be nice and quick.
Is there any specific FT232H module you'd recommend?
Re: BBC Model B No2. Will it live again!
Posted: 17 May 2021 23:46
by rubber_jonnie
Tomswork wrote: 17 May 2021 23:42
I had to burn a eprom for a macintosh classic the other day after spending all day looking for my uv lamp 🔦
But I did win
Tom
Yaaaay!
BTW one of Mr Morleys ROM emulators may be useful for you.
Re: BBC Model B No2. Will it live again!
Posted: 17 May 2021 23:52
by Tomswork
I would love a a eprom emulator that does the MCM68766 but can be programed in a 2764 socket
And a 2532 emulator that can be programed in a 2732
That would make me smile 😃 ☺
Tom
Re: BBC Model B No2. Will it live again!
Posted: 18 May 2021 08:22
by JezC
rubber_jonnie wrote: 17 May 2021 23:45
I'd definitely like a PCB, please, as well as one of your 64KB sideways EPROM kits too please.
Ooh, that sounds interesting...I have the Solidisk Sideways ROM/RAM kit for my original Beeb somewhere...but a more modern (and reliable) alternative would be good.
Another item to add to the wish list.... ;)
Re: BBC Model B No2. Will it live again!
Posted: 18 May 2021 08:52
by cmorley
Tomswork wrote: 17 May 2021 23:52
I would love a a eprom emulator that does the MCM68766 but can be programed in a 2764 socket
And a 2532 emulator that can be programed in a 2732
27C400 has a /BYTE pin so works in 8-bit mode. A pinout adapter should work in pretty much any gear assuming you have the physical space for the 40 pin module + adapter. I did an adapter for the 1Mbit mask ROM in an Acorn Master for example.
Re: BBC Model B No2. Will it live again!
Posted: 18 May 2021 09:05
by cmorley
rubber_jonnie wrote: 17 May 2021 23:45
Is there any specific FT232H module you'd recommend?
The PCB is designed to take the "CJMCU" one. Presumably because people have been searching for that term the helpful eBay sellers are selling a smaller module with different pinout under the same code now. There is a photo in the stardot thread of the correct one.
https://www.ebay.co.uk/itm/192189843351 ... SwfRdZHB~l
Re: BBC Model B No2. Will it live again!
Posted: 18 May 2021 09:14
by rubber_jonnie
cmorley wrote: 18 May 2021 09:05
rubber_jonnie wrote: 17 May 2021 23:45
Is there any specific FT232H module you'd recommend?
The PCB is designed to take the "CJMCU" one. Presumably because people have been searching for that term the helpful eBay sellers are selling a smaller module with different pinout under the same code now. There is a photo in the stardot thread of the correct one.
https://www.ebay.co.uk/itm/192189843351 ... SwfRdZHB~l
Great, thank you!
EDIT: Ordered