Fast Disk ROM: What exactly does it do ?

By foske

Resident (36)

foske's picture

15-01-2007, 13:05

As questioned in the subject: What optimization is done in a fask disk rom to make it faster ?

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By zeilemaker54

Champion (332)

zeilemaker54's picture

15-01-2007, 13:43

Generally the code in the diskdriver optimized to execute faster. A common way to speed up execution is to disable the interrupts during disk i/o. Also with the WD2793 controller, a common way to speed up disk i/o is to use the fastest track seek speed (programmable wit the WD2793). Original SONY diskrom's for example do not use the fastest speed possible, and are therefore slower than a PHILIPS diskrom, alltough they are both using the same hardware.....