[Coco] hard disk performance

[Gene Heskett]

On Friday 26 September 2008, Robert Gault wrote:

>PS.

>

>I've assumed that the limiting factor is the speed of the hard drive

>system, not megaread. The code for megaread follows

>

>ReadK    equ   1024       1024K is 1 megabyte (modify as desired)

>

>          mod   eom,name,tylg,atrv,start,size

>

>          org   0

>KiloBuff rmb   $0400

>          rmb   200        stack space

>size     equ   .

>

>name     fcs   /MegaRead/

>          fcb   edition

>

>start    ldx   #ReadK

>loop     pshs  x          save counter

>          leax  KiloBuff,u point (X) to buffer

>          ldy   #$0400     read 1K

>          clra             std input

>          os9   I$Read

>          bcs   eofchk

>          puls  x          recover counter

>          leax  -1,x       done yet?

>          bne   loop       no, go get another 1K

>          bra   exitok     yes, exit

>eofchk   cmpb  #E$EOF     end of media?

>          bne   exit       no, a real error

>exitok   clrb

>exit     os9   F$Exit

>

>          emod

>eom      equ   *

>          end


I see this version of megaread uses stdin. I think I have a version that takes 
the descriptor string and opens it for reading.  I *think* that may be 
faster.  I'm logged in, maybe I can find it.  Yup, it even queries you for 
which drive to read.  But the change in the date t syntax to date -t prevents 
getting the seconds out of its display.

Always something...


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-- 
Cheers, Gene
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