ROM Burner/Programmer

for bbc micro/electron hardware, peripherals & programming issues (NOT emulators!)
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robheaton
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ROM Burner/Programmer

Post by robheaton » Sun Nov 03, 2019 7:22 pm

I'm looking at getting a USB ROM Burner/Programmer, there seems to be quite a choice out there and I wondered what people on here use?

I would mainly be using it for 28 PIN BBC ROMS, would something like this be suitable? https://www.amazon.co.uk/gp/product/B07 ... 65VF&psc=1


Also, can someone recommend a place to buy 28 PIN EPROMS from?

Thank you!

Ramtop
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Re: ROM Burner/Programmer

Post by Ramtop » Sun Nov 03, 2019 7:59 pm

That's what I use. The software is ugly and basic, but the programmer is mostly fine. I've use it to program hundreds of EPROMS and flash chips with no complaints.
Gary

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danielj
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Re: ROM Burner/Programmer

Post by danielj » Sun Nov 03, 2019 8:05 pm

I'd seriously consider using eeproms - you can reprogram them internally without having to resort to a programmer!
Chris does some which are solder-free:

http://www.boobip.com/hardware/64kb-eeprom

d.

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KenLowe
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Re: ROM Burner/Programmer

Post by KenLowe » Tue Nov 05, 2019 12:45 am

The TL866Ⅱ Plus is quite a good little programmer, but be aware that it is not suitable for older EPROMs that require 21v to program. Most newer EPROMs only require 12.5v, so those should be fine.

Plenty of sellers on ebay for 16k EPROMs.

The EEPROM route is definitely another route to consider.

johnkenyon
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Re: ROM Burner/Programmer

Post by johnkenyon » Tue Nov 05, 2019 11:40 am

You might find it easier/cheaper to get hold of 27256 devices compared to 27128.

If you "double up" the image, you can use a 32k device in a 16k sockets on the BBC B mainboard and IC27 on the Master.
In both cases, A14 is tied to +5v so only the upper half of the device is used.

Your mileage may vary with other ROM boards and cartridges - the circuit diagram for the "official" EPROM cartridge at http://mdfs.net/Info/Comp/BBC/Circuits/Master/eprom.gif
seems to suggest that the same "double up" rule applie, as reading from the cartridge sets pin 27 (A14) to 1, and writing to a 32k EPROM the cartridge does nothing.

Note that I use "27256" and "27128" are used as a generic term for 32kx8 and 16kx8 EPROMS - if you go down the 32k route, you'll probably end up with 27C256.

eXne
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Re: ROM Burner/Programmer

Post by eXne » Sun Nov 10, 2019 2:15 pm

I use this Epromprogrammer as well sofar I'm happy.
You have a look at Aliexpress, will safe you a bit, but longer leadtime.

The thing I'm puzzeling on is how to read the original Acorn proms ie HN613128.
Acorn BBC + 6502 and Z80 2nd proc and CoPro, Master 128, 512 + 80186. Atom Prophet

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roland
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Re: ROM Burner/Programmer

Post by roland » Sun Nov 10, 2019 4:25 pm

How many eproms do you need?

I even have a simple 27128 eprom programmer for the BBC (user port iirc). But you didn’t ask for that...
256K + 6502 Inside
MAN WOMAN :shock:

eXne
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Re: ROM Burner/Programmer

Post by eXne » Sun Nov 10, 2019 5:24 pm

Yep still have my own build eprom programmer as well.
The userport is really versatile :D
Still works with all the old eproms :D
Acorn BBC + 6502 and Z80 2nd proc and CoPro, Master 128, 512 + 80186. Atom Prophet

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