From: William Levak (wlevak_at_sdf.lonestar.org)
Date: 2007-04-04 07:26:15
On Wed, 4 Apr 2007, Anders Carlsson wrote:
> Hello again,
>
>> I would start with the EPROMs
>
> After express delivery (ordered on Wednesday, shipped from Canada on
> Thursday, arrived in Sweden on Tuesday!), I have now received my EPROM
> burner/reader.
>
> I have carefully removed the three EPROMs and read them one after
> eachother. The 2764:s seem to be fine, but I'm unsure if I managed
> to successfully read the AM27128. The reader software supports two
> versions, 21V Vpp or 12.7V Vpp. As long as I'm only reading, it should
> be the same voltage, but at one setting I only get $FF (empty chip)
> and at the other setting I'm getting some kind of consistent, if not
> so intelligent data.
>
> I haven't analyzed these dumps more than quickly comparing them to
> the ROM set in WinVICE xplus4, and found that at least a few text
> strings are the same, so they can't be completely mush.
>
> For those interested, you can download the archive here, and see if
> you can parse the raw data. Obviously the .bin files are without a
> loading address, as I frankly don't have a clue where in the memory
> map they should go.
ted-lo looks like $8000-BFFF
ted-hilo looks like $C000-DFFF
ted-hihi looks like $E000-FFFF
$390-770 in ted-lo looks like it should be the command list, but it is
obviously garbled.
wlevak@sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org
Message was sent through the cbm-hackers mailing list
Archive generated by hypermail pre-2.1.8.