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1997-01-14
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FastVBR v2.5
Public Domain 1996
Purpose of FastVBR is to move Motorola 68010+ processor vector
table to FAST memory. This may cause faster system operating, especially
when performing exception-based tasks (e.g. serial transfer), because
the processor has faster access to interrupt handling routines'
addresses.
FastVBR is heavily based on the source of Michal and Piotr
Kolodziejczykowie, published in Magazyn Amiga nr 5/96. My main change is
allowing vector base to be moved back to CHIP ($00000000), which is
needed by some games (helpful when you enable it by default, and there
is a need to disable it later).
Requirements: 68010 or better
Examples of use:
FastVBR ;move vector table to FAST RAM
FastVBR s ;(s as in slow) move it back to CHIP
FastVBR c ;(c as in chip) like the previous one
FastVBR x ;change memory type.
Changing memory type means moving to FAST, if in CHIP and vice
versa (weird, I know).
In above examples, when moving back to CHIP, memory used
previously by the table isn't freed. To free it, type in:
FastVBR S ;or
FastVBR C ;or
FastVBR X ;
WARNING: Freeing should be used only if only when VBR was moved
to FAST by this proggy (or other one allocating 512 bytes with AllocMem).
When not succeded, proggy returns code 5 (WARN), so the batch
file (usually Startup-Sequence) is not interrupted.
FastVBR may be run from Workbench.
E-mail:
tadek@student.uci.agh.edu.pl
Snail-mail:
Tadek Knapik
ul. Duza Gora 35/88
30-857 Cracow
Poland
Phone:
(0-12) 57-86-14
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