/pub/cbm/documents/projects/memory/plus4/

Memory expansions for the Commodore 264 Series

Files

c116-256.gif 2009-08-18 10903
256kB RAM expansion for the Commodore 116. Drawn by
Drawn by Jerzy Sobola, July 15, 1999. Downloaded from

http://www.republika.pl/jsobola/schematy.htm.
c16-256.gif 2009-08-18 10831
256kB RAM expansion for the Commodore 16. Drawn by
Drawn by Jerzy Sobola, July 15, 1999. Downloaded from

http://www.republika.pl/jsobola/schematy.htm.

c16-to-1MB.gif 2009-08-18 94809
Control logic for expanding the Commodore 16 or plus/4 to 1 megabyte
of internal memory (four 256k banks).

epromexp.zip 2009-08-18 233860
Schematic diagrams (in German) and instructions (in English) for building
an EPROM expansion of up to 1.5 megabytes. H.Lux 01.07.1991.
expinstr.zip 2009-08-18 183169
Two 1541 disk images containing

- 256kB RAM expansion hannes and update v1

- EPROM expansion

- circuits and sheets for practical realisation.
Note: texts are in German; some 256kb-programs on disk

kernal256.bin 2009-08-18 16384
A modified version of the 318004-04 firmware that supports the
c16/c116/plus4 256kB memory expansion documented by Jerzy Sobola.

os96_9b.zip 2009-08-18 43543
1551 floppy emulator for MS-DOS; uses a cable between the plus/4 and
the parallel port of the PC. Includes two EPROM images for the plus/4.
Features: datalink to PC, setup utility with SRAM card or expansion,
printer driver, floppy wedge, hardware check

p4-256.gif 2009-08-18 10767
256kB RAM expansion for the Commodore plus/4. Drawn by
Drawn by Jerzy Sobola, July 2, 1999. Downloaded from

http://www.republika.pl/jsobola/schematy.htm.

p4-expanded-bottom.jpg 2009-08-18 321354
A plus/4 circuit board with all OS96 expansions; bottom view
p4-expanded-top.jpg 2009-08-18 345209
A plus/4 circuit board with all OS96 expansions; top view

ram256kb.zip 2009-08-18 434384
A 256 kB RAM expansion for the plus/4 (Hannes/Solder/CSORY)

sram.zip 2009-08-18 138389
All you need to build the 384 kB SRAM expansion in your plus/4.
Hand drawn and scanned schematic diagrams with German descriptions

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