FlashJacks is a new device which includes multiple devices. Inside we can find a typical FlashROM and RAM, a compatible Sunrise drive and a repertoire of audio systems for our MSX. All of this can be connected to an internal slot expander at our convenience. It is the philosophy of this cartridge to get all of these devices coexist in a single slot and behave like the original device they synthesize without patches nor software adaptations.

The technical features are as follows:

1 slot expander.

4 FlashROM units with 14 loading mappers and several synthesized EPROM models (AMD, ATMEL, MICROCHIP, etc) up to 4MB each.

4 RAM mapper units up to 4MB each.

4 MEGARAM units up to 2MB each.

1 Sinfox compatible drive with SD access (v4.04).

1 Sunrise compatible IDE drive. Autoconversion and SD card operations on the fly. FAT16 Nextor compatible.

2 Switchable stereo PSG units. Sampling rate 48KHz/16bit per channel.

2 Switchable stereo SCC units. Sampling rate 48KHz/16bit per channel.

1 Switchable stereo FM unit. Sampling rate 48KHz/16bit per channel. In addition, it can be added an FMPAC unit with full synthesis where the internal soft is included with its original mapper and even an SRAM of 8KBytes.

Relevant link: Flashjacks website

EDIT: As the author mentioned the cartridge is not for sale!