HP 48G - what next?

[cdmackay]

(03-01-2019 09:30 AM)JSS Wrote:  2) 50G 's USB port, is it fully standardized (e.g. USB1.0 & normal voltage levels) and supports similar functionality than using the serial cable connection?

3) Finally, about max 1 GB SD memory cards, they state that 50G supports FAT32 only partially and is restricted to max 1GB, but does it accept larger memory cards if formatted into 1GB partitions?

I don't know about the serial connection, but the USB connection can be used as a serial-type connection, allowing Kermit/XMODEM transfer, just like serial on an HP48. And to power the 50g, as people have said. Or you can just use the SD card to transfer things.

There's no need to format an SD (not SDHC) card (up to 2GB) into partitions.

The largest SD card that the 50g can format is 1GB. But it can use up to 2GB SD, which is the limit where SDHC starts — the 50g cannot use SDHC cards, i.e. greater than 2GB (possibly if they are partitioned into 2GB chunks? I don't know)

Cards above 1GB can only be formatted on a computer. The best format to use is FAT-16, which is required for SD-based ROM upgrades/reflashes.

There is not enough space in the 50g filer to report all the digits, for 2GB cards, so the 1 in front is missing. However, the 50g can still use all the space.

I hope that helps.