Some Quadram Cards
Memory Expansion Board
Identified as such via an advertising photo in the rear section of the manual at here.
3 banks of 64 KB = 192 KB
From a thread on the VCFF, we know that:
- Of the RAM banks, bank 0 is the one closest to the ISA slot.
- From left to right, the RAM chips are most likely laid out as bits [P][0][1][2][3][4][5][6][7].
Photo posted by Ps2K at the VCFF
Quad 512+
Identified as such via an advertising photo in the rear section of the manual at here. (Note: manual not for Quad 512+)
Verified by coolhand1701 at the VCFF, who wrote, "The box I got it in said it was a Quad 512+"
Photo posted by IBM_User at the VCFF.
Quadboard
A Quadram Quadboard of 1982
Clock / 1 x parallel / 1 x serial / 4 banks of 64 KB = 256 KB
Manual is here
Photo source: eBay
Quadboard II
Identified as such via an advertising photo in the rear section of the manual at here. (Note: manual not for Quadboard II)
Clock / 2 x serial / 4 banks of 64 KB = 256 KB
Photo posted by arkady at the VCFF.
Silver Quadboard
According to JDT at the VCFF, "Its a Silver9006 , Silver Quadboard"
Only 3 banks of RAM
Photo posted by JDT at the VCFF.
Quadboard
A Quadram Quadboard of 1984
Clock / 1 x parallel / 1 x serial / 6 banks of 64 KB = 384 KB
Manual is here
Photo source: WikiPedia
Quadboard
A Quadram Quadboard of about 1984
6 banks of 64 KB = 384 KB
Very close, but not the same, as the board immediately above.
Photo posted by chris_nh at the VCFF.
Liberty PC
A Quadram memory card of about 1985
8 banks of 256 KB = 2 MB
?????
An unknown Quadram memory card of about 1985
8 banks of 256 KB = 2 MB
Maybe this is a later version of the Liberty PC ?
Photo posted by Tr3vor at the VCFF.
Liberty AT
A 16-bit memory card of about 1985
8 banks of 256 KB = 2 MB
See here.