Post Reply 
Found these inside a non-working 71B
03-14-2018, 03:56 AM
Post: #80
RE: Found these inside a non-working 71B
(03-14-2018 03:39 AM)MikeSD Wrote:  Regarding FREE:PORT (0.04) That doesn't work but .05 and .06 do.

Interesting. Perhaps the IL Mailbox (usually hidden port 0.04) must stay at that port address, and the added RAM picks up at the next available port (0.05 & 0.06).

Can you try SHOW PORT (after FREE-porting both 32K banks)? This should confirm the HP-IL ROM is 16KB, type=2, PORT(0.07) which should clarify all remaining unknowns.

--Bob Prosperi
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
RE: Found these inside a non-working 71B - rprosperi - 03-14-2018 03:56 AM
What's U10? - Dave Frederickson - 03-15-2018, 03:43 PM



User(s) browsing this thread: 1 Guest(s)