16K Memory Expansion Module
Posted: Mon Jun 16, 2014 7:17 am
Hi,
Thanks to Dieter König (http://www.classic-consoles-center.at), who lent me his Prototype (or at least very small production run) i was able to examine it and take pictures of this gem. (Madrigal will add bigger and pictures to the site soon).
The 16K Memory Expansion Module uses the same case and the same PCB as the Parallel I/O Module and they simply added an internal cartridge-slot and used the same Memory cartridge as in the Salora Manager 16K Expansion!
As Barry Klein in his Wizzdom Newsletter #3 stated, only 12K are addressed and useable. I do not know how the 16K and the I/O work together, because they share one 2K Memory block (i think the user has to take care not to "double use" the I/O module adresses...
One strange Thing is the 2K block from F000-F7FF... on both expansions (16K and I/O) this Memory area is left unused... so i ask myself Why?????
Has anyone an idea? here are my guesses: maybe used to blend in future Diskdrive I/O? or maybe reserved for BIOS updates? I have no clue...
here are the Pictures ;0)
Thanks to Dieter König (http://www.classic-consoles-center.at), who lent me his Prototype (or at least very small production run) i was able to examine it and take pictures of this gem. (Madrigal will add bigger and pictures to the site soon).
The 16K Memory Expansion Module uses the same case and the same PCB as the Parallel I/O Module and they simply added an internal cartridge-slot and used the same Memory cartridge as in the Salora Manager 16K Expansion!
As Barry Klein in his Wizzdom Newsletter #3 stated, only 12K are addressed and useable. I do not know how the 16K and the I/O work together, because they share one 2K Memory block (i think the user has to take care not to "double use" the I/O module adresses...
One strange Thing is the 2K block from F000-F7FF... on both expansions (16K and I/O) this Memory area is left unused... so i ask myself Why?????
Has anyone an idea? here are my guesses: maybe used to blend in future Diskdrive I/O? or maybe reserved for BIOS updates? I have no clue...
here are the Pictures ;0)