HxC Floppy Drive Emulator

Hi Jeff, Hi Torlus,

I was wondering if the floppy drive emulator had enough RAM on board to store the entire decoded MFM virtual floppy image (instead of requesting track by track), would the floppy emulator be able to write data to the SRAM memory area (ie: save data to floppy)?

I understand the FPGA would need to be programmed with some extra I/O address lines to access >256KB RAM.

Regards,
Gizmomelb

The floppy emulator is like an UART transmitter with a “small” double buffer of 2*1KB.

When a page is sent to the floppy interface, the other is filled by the usb interface.
For a track revolution, there are approximately 25 pages flip.

Theoretically, it’s useless to store all floppy mfm data in the floppy emulator to simulate the floppy write. It is possible to send back written page through the usb interface before load a new page…


Jeff