Posted By
BSZ
on 2021-11-13
11:19:20
|  Re: SD2IEC drives + VCPU extension
@marcos64: Thank you! The numbers are slightly different from what we have seen so far. But I'm not surprised! This is a bit more complicated than a traditional floppy.  I started to make a spreadsheet in which I collect the values. The file loading is in two parts: 1: reading from the card, 2: data transmission to the machine. The times shown in the pictures are the sum of the two.
Create a separate test was made to measure the time taken to read from the card: "q-benchmark". I thought: "overall time" - "reading time" = "transmission time", but the "transmission time" is constant, thanks to the unified hardware. So far I have been able to compare two tests, but the calculation doesn't work out.  If you feel like it, check out this test! What may be of interest is the type/size of the SD card and what file system is on it. (The firmware handles the FAT12 / 16 / 32 filesystems, i think. )
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