Probably a good idea to use a pull up resistor (a couple of K will do) rather
than switching up directly to 5 V
From: Alain HAOUI <alain.ha...@free.fr>
To: ql-us...@q-v-d.com
Sent: Friday, 19 May 2017, 17:20
Subject: [Ql-Users] Split big ROMs on Q40
With Peter Graf's indications and some AM27C4096 ships supplied by Derek
Stewart, I realized a little circuit permitting to have a global ROM size of
1 MegaBytes on Q40 with 2 big OSes (custom SMSQ/E) ROMed together (up to
512KB each) and selectable from a case switch.
You can find schematic and some details from forum :
http://qlforum.co.uk/viewtopic.php?f=20
<http://qlforum.co.uk/viewtopic.php?f=20&p=17547#p17547> &p=17547#p17547
Alain
_______________________________________________
QL-Users Mailing List
_______________________________________________
QL-Users Mailing List
