EPROM?

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thearttrooper
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EPROM?

Post by thearttrooper » Sun Nov 10, 2019 9:32 pm

I've bought myself a TL866II Plus EPROM programmer and would like give it a go. I need some EPROMs. I have a Master 128 with a cartridge case with a space slot for a ROM. What kind of EPROM should I get?

Thanks for your help.



Chris.

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danielj
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Re: EPROM?

Post by danielj » Sun Nov 10, 2019 11:26 pm

27C128 or 27C256 (although you can only use half of the latter, but that's fine as it's 16K) - or you can use EEPROMs, e.g. 28C256 etc... EEPROMs are easier to erase as you don't need UV :)

d.

thearttrooper
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Re: EPROM?

Post by thearttrooper » Wed Nov 13, 2019 9:11 pm

Thanks. I think I miss-typed EPROM when I meant EEPROM. Takes me back to "borrowing" Basic and other ROMs from school beebs and having blowing a copy with some cool big HP kit that a friend of the family had.


Chris.

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1024MAK
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Re: EPROM?

Post by 1024MAK » Wed Nov 13, 2019 11:11 pm

Depends on if you will actually want to erase them. If not, one time programmable EPROMs are slightly cheaper (that’s what BeebMaster uses).

Mark

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BeebMaster
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Re: EPROM?

Post by BeebMaster » Thu Nov 14, 2019 12:24 am

Sssshhhh that's a secret! Actually, I am running short of them after all these years! So the batch of 8271 disc kits (if Texas Instruments actually eventually trouble themselves to fish out the blueprint for the 74LS393 and make some) might have some ceramic 27C256 with a window and everything!
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thearttrooper
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Re: EPROM?

Post by thearttrooper » Sat Nov 16, 2019 6:35 am

My TL866II has arrived. Has anyone succeeded in making it work on MacOS or Linux? It comes only with software for Windows.

I found a gitlab repos with a command line tool ... but my Linux-running laptop doesn't recognise the device when I plug it in.



Chris.

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Re: EPROM?

Post by roganjosh » Sat Nov 16, 2019 9:40 am

I'm assuming you mean the "TL866 II plus", in which case the command line tool 'minipro' appears to work under Fedora Linux after doing a "dnf install minipro"

dmesg then shows:
[ 6406.745914] usb 1-13: new full-speed USB device number 11 using xhci_hcd
[ 6406.874020] usb 1-13: New USB device found, idVendor=a466, idProduct=0a53, bcdDevice= 0.00
[ 6406.874025] usb 1-13: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 6406.874029] usb 1-13: Product: Xingong XGecu USB Prog.. Device
[ 6406.874032] usb 1-13: Manufacturer: Xingong Electronicg Co..
[ 6812.635964] usb 1-13: USB disconnect, device number 11

when the device is plugged in and I can successfully do a 'minipro -p "AT28C64" -r test.rom'
I haven't tried a write with it (I use W10) but it looks promising.

If you aren't seeing the above dmesg stuff then you obviously need to check your udev rules.

The software doesn't work with my system using the older TL866A/CS, that gives a libusb overflow error.

Alan

thearttrooper
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Re: EPROM?

Post by thearttrooper » Sat Nov 16, 2019 11:04 am

Thanks Alan. I will check the dmesg output when I plugin the device. Yes, it is a TL866IIplus.


Chris.

thearttrooper
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Re: EPROM?

Post by thearttrooper » Sat Nov 16, 2019 1:10 pm

Building the minipro from the gitlab repos on my Mac worked fine and it was able to find the device. I pulled a ROM from my beeb and tried to read it but the sticker on the ROM means I can't tell the type. I've ordered some EEPROMs to try with it.

Thanks for all the help.



Chris.

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