Nyagosu has updated the MSX Emulator for the Nintendo DS, the page is in Japanese but he has updated a little in English so heres whats new (as far as we can tell)
Update gbamp driver.
(Support GBAMP, SC CF, SC SD, M3 CF, SRAM)
However, it has not worked in my SC SD yet.
When a special key is pushed, the key font is changed. special key
(japanese keyboard only)