Re: Board/Chip ID

["Bill Garber" <willy46pa@comcast.net>]

"Wayne Stewart" <waynes@telus.dotnet> wrote in message 
news:esDCe.136934$tt5.28558@edtnps90...
> Ziggy wrote:
>> Ok, need help with a couple of expansion boards...
>>
>> One says its a 'videx 44439' but its missing a chip.. no idea what chip i
>> need to shove in there.. its the chip right above the main chip, just 
>> left
>> of one of the character set EPROMS ( says standard 7x9 ). I assume its a
>> 80Col video.. But with out the missing chip I'm afraid to try it.
>
> Sounds like the Videx 80 column card. The card has room for three EPROMs
> which contain character sets. Most cards didn't have all three EPROMs
> but you could order them from Videx or if you had an EPROM burner you
> could design your own character set. You can download a PDF of the
> manual at http://www3.telus.net/waynes/videx_videoterm.pdf

Actually, the vertically mounted eprom is the 80 column firmware.
The right hand of the horizontal character eproms is the original 80
column set, and the left hand eprom is for a graphics set.

Bill Garber