A new MSX SD-Mapper V2 Interface allows your use up to two SD cards (up to 4GB) as a mass storage media for your MSX.
Fully compatible with all MSX models, inclunding MSX1, MSX2, MSX2+, Turbo R and One Chip. Machines with less than 128k will need the 512KB on-board RAM ACTIVE and the MAPPER function selected, otherwise the interface will work in MSXDOS1 mode with limited functionality. Attention! Interface didn’t work properly at the new Zemmix mini and the original Korean Daewoo CPC-300E, It is not possible to disable the internal computer extra ROM. At Arabic Bawareth CPC-300 worked fine.
There are 2x slots for SD cards that support 4Gb, each totalizing up to 8Gb.
Original project by Belavenuto and Sturaro with latest firmware by FRS version hardware fully compatibility.
Redesign
We have completely redesigned and created a new printed circuit board, paying special attention to the pcb layout in the memory area, we have reduced the length of all tracks by half, unlike the original board design, into rules for the layout of high-speed memory chips circuits.
Interface
Interface uses the NEXTOR kernel to access the storage media. It supports FAT12 and FAT16 partitions.
Nextor is an evolution of MSX-DOS 2 natively supporting FAT16 partitions up to 4GB, and can have 4 partitions per SD card. 128KB of Mapper is required on the minimum to use Nextor with access to sub-directories, less than 128K mapper only allows the use of the MSXDOS1 kernel, limiting partitions with FAT12 and maximum 16MB per partition.
User manual
One of the switches enables or disables the Mapper in conjunction with a slot expander. The second key allows you to select between two driver options, useful for having a backup a stable version of the driver and use it to restore a new driver update failed.
Mapper mode
Add 512Kb of Memory Mapper to your MSX machine that enables run the Nextor DOS2 even on an MSX1. On Nextor DOS2 there are many other new commands and works with sub directories to navigate on SD card as a Hard Disk in FAT16 format, so is possible exchange files with PC easily.
Sony HB-F1 – the built-in Personal Databank menu
The Sony HB-F1 does have a difference at startup: when turned on, it doesn’t immediately load the cartridge, but first loads the built-in Personal Databank menu.
How to start:
Insert the cartridge
Hold DEL button, turn on the computer until the beep, release DEL.
In 90% of cases, the SD-mapper or flash-cart loads immediately.
The Sony HB-F1 does have a quirk with its slots, which causes some cartridges (especially mapper-RAM and SD cartridges) to behave differently in different slots. This is due to the slot architecture in the MSX and how Sony organized them in this model. Practical advice from HB-F1 owners
Recommend:
Installing complex cartridges in SLOT 1 (left), because it most often corresponds to CS1.
Many cartridges were tested there. On some revisions, it’s the opposite—but generally, the left slot is more stable.
Quickstart guide
When dropping into BASIC, type CALL FDISK to start formatting the SD card. The FAT16 file system used by Nextor supports a maximum of 4GB.
After partitioning and formatting, shut down MSX, remove the SD card and put it on your PC, copy the contents of the archive folder into the first partition of the SD card and put it back in MSX.
Automatic script
You can also download a script file for Windows 10/11 that will automatically format your memory card and write all the necessary files to it. Download the archive, unzip it to any convenient location, install a card reader with a card of any size, and run sdcreate.cmd.
3d printed case
Download STL files for MSX SD Mapper V2
