11/19/13: CoCo Floppy Disk Data Transfer Rate? by CoCoJon, | Category: Peripherals | 1 comment - (Comments are closed)

CoCo Floppy Disk Data Transfer Rate?

Hello,

CoCoJay and I were trying to find out what the data transfer rate for a 5.25-inch DS/DD floppy disk drive is on the CoCo under RS-DOS and OS-9.  However, we couldn’t seem to find a direct answer anywhere on the Web.  Does anyone here know the answer to that question?

Thank you very much.

CoCoJon

 

1 comment to CoCo Floppy Disk Data Transfer Rate?

  • Robert Gault

    Looks like you are going to have to determine that yourselves. After all, science is experimental. :)

    For example, create a file of known size. Let’s say it is a binary dump of memory from $5000-$6FFF or 8192 bytes. Then you can write a short Basic program to start a timer, LOADM, the data file, and print out the elapsed time.

    SAVEM”2KDATA.BIN,&H5000,&H6FFF,0

    10 TIMER=0:LOADM”2KDATA”:A=TIMER
    20 PRINT 8192/(A/60);” BYTES/SECOND”

    You should be able to write something similar in Basic09 using the OS-9 clock function.

    You can increase the file size for better accuracy as long as it does not overlap your program.