Megalextoria
Retro computing and gaming, sci-fi books, tv and movies and other geeky stuff.

Home » Digital Archaeology » Computer Arcana » Apple » Apple II » extra slotboard extending a II
Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend 
Switch to threaded view of this topic Create a new topic Submit Reply
extra slotboard extending a II [message #402448] Thu, 26 November 2020 22:27 Go to next message
barana is currently offline  barana
Messages: 91
Registered: March 2013
Karma: 0
Member
In the light of John Brooks' extensions to prodos 2.4/5, " 10) Extend 4-bit unit DSSS0000 (7x slots, 2x drives) to 8-bit DSSSsddd (14x slots, 16x drives) "
would the II hardware be easily extensable with something as simple as the likes of this busboard + more bus power? http://www.applelogic.org/TheAppleIISlotsBoard.html or are there real limitations as to the bus arbitration logic?
I have friends with more cards than slots....
Do I forsee a resurgence in demand of mac II cases?
Re: extra slotboard extending a II [message #402501 is a reply to message #402448] Sun, 29 November 2020 16:17 Go to previous messageGo to next message
Wayne Stewart is currently offline  Wayne Stewart
Messages: 306
Registered: September 2012
Karma: 0
Senior Member
15-20 years ago I towerized a IIe. As part of that project I wired a board with some slots in parallel with one IIe slot. The idea was to use it with cards that don’t have a slot id. Seemed work well enough.
Re: extra slotboard extending a II [message #402522 is a reply to message #402501] Mon, 30 November 2020 14:34 Go to previous messageGo to next message
Anonymous
Karma:
Originally posted by: Micah Cowan

> The idea was to use it with cards that don’t have a slot id.

Out of curiosity, what does that mean in this context? Cards that simply snoop bus traffic, without containing firmware ROM to call upon to drive it, nor a need to write to screen holes, etc? What sorts of applications were possible? (I've only had an Apple II since about a year ago - though that one has already become four, heh.)
Re: extra slotboard extending a II [message #402552 is a reply to message #402522] Wed, 02 December 2020 11:39 Go to previous message
Wayne Stewart is currently offline  Wayne Stewart
Messages: 306
Registered: September 2012
Karma: 0
Senior Member
Most cards like disk controllers ad printer cards have slot ids. They need a slot to themselves and can’t co-exist with another card. A good example is with the IIe, if you have a card in the Auxiliary slot then most cards won’t work in slot 3. A very few like video cards, accelerators will.
  Switch to threaded view of this topic Create a new topic Submit Reply
Previous Topic: ADTPro 2.1.0 released
Next Topic: Florida PC Library
Goto Forum:
  

-=] Back to Top [=-
[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Thu Mar 28 13:52:10 EDT 2024

Total time taken to generate the page: 0.03964 seconds