Hi
Thanks to Hans Otten!!! I grounded pin 1 and it works! Bit of a bugger
but my keyboard layout is nou different! I'll probably have to live
with it?
JP Grobler
[EMAIL PROTECTED] 22 Apr 2001 19:33:54 +0200, in
local.msx.int you wrote:
>Pin 1 on the 27512 is adress line 15
>Pin 1 on the 27256 it is Vpp
>
>Should it be grounded?
>
>
>On 22 Apr 2001 18:43:19 +0200, in local.msx.int you wrote:
>
>>
>>Hi,
>>
>>The ROM should work. Are you sure about pin one removal wil do the trick?
>>It should be tied permanently to either ground or +5V, not left just not
>>connected.
>>
>>I am sure the pin layouts are on the web somewhere, at least in the EPROM
>>related articles by Elektuur in the do it yourself -magazines section of my
>>webpage. The EPROM in statische geheugenuitbreiding discuuses just this
>>subject.
>>
>>Hans
>>www.geocities.com/msxhans
>>
>>PS Cd is on its way tomorrow!
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