Description

The R. & J.Jansen Memory Mapper 256/512 is a standard memory extension of 256 or 512kB that was sold in Netherlands. It was made by son and father R. & J.Jansen.

Gallery

R. & J.Jansen Memory Mapper

R. & J.Jansen Memory Mapper PCB with 512kB

R. & J.Jansen Memory Mapper box

R. & J.Jansen Memory Mapper box back

Minimum System Requirements

• MSX2 computer, one free slot cartridge

Note: As all standard Memory Mapper, this cartridge is not supported by MSX1 computers because we need to manually initialize the mapper pages in 3, 2, 1, 0 order at startup. Nextor or a MSX-DOS2 unbridled (like Sunrise CF interface) can allow you to use this expansion on MSX1 without manually initialize the mapper pages.

Software

• BMMS (Bigger Memory Mapper Selector)
• CHKMEM.BIN (Utility that displays the slot of RAM, Memory Mapper and MegaRAM by LARK)
• Mapper Info (by Yukke)
• MEGA16.COM (loader for megaroms with 16k mapper)
• MEMTEST.COM (RAM of Memory Mapper tester by Masatoshi Fujimoto)
• TESTMAP.COM (RAM of Memory Mapper tester by Marteen)
• SofaRom (MegaRoms and Roms loader by Louthrax)