RE: 1541 ROMs question

From: Baltissen, R (Ruud) (
Date: 2001-12-20 07:44:20

Hallo David,

> I have scanned those pages into

BINGO, thank you, David  !!!

We knew from other sources that the Vpp = 25V. Your GIF confirmed my
yesterday's theory that the ChipSelect-line is used both as programpin and
as programvoltagesupply. About the algorithm: I would start with pulses from
10 ms up to 50 ms until the data is stored. 
But I probably have one problem: is my prommer capable of supplying this pin
with 25V ?
   / __|__
  / /  |_/     Groetjes, Ruud
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