Some programs require 512kB RAM for correct work. The extra RAM also is used by MasterDOS as a ramdisk. CPM22QED also uses this memory for M: ramdisk. In ZXVGS more banks are available.
SAM512 is a remake of original memory extension that upgrades Sam to 512kB RAM. The original board was larger and more expensive slot were used. SAM512 board is fully compatibile to original one.
Mounted from bottom side of computer, in the pin slot dedicated to it. Only unscrew the label and carefully insert the board (you don't need to disassemble the whole case). The Sam tests the memory and reports 512kB after adding the extension.
Next version will be made with SMD chips to reduce costs and dimensions. This board has dimensions 33mm × 18mm.
Files for download
- sam5-004.zip 35.2kB (2006-04-12 01:12)
- SAM512 board v004 - Eagle data files.
- proto.jpg 48.4kB (2003-10-17 12:56)
- Prototipe - top and bottom view.
- Sam Coupé
- The Sam Coupé computer by MGT.