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fbl31.readme
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1993-04-18
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Short: Speeds up blitter access.
========================================================
fbl - fASTERblIT 3.1
========================================================
Copyright (C) 1993 Arthur Hagen
All rights reserved
--------------------------------------------------------
FreeWare - no payments or charges may be made whatsoever
--------------------------------------------------------
(This means that PD vendors and pay-boards should keep
their hands off this product - no compilation disks with
this program on may be distributed for charge, either.)
========================================================
This tiny program will speed up blitter processes just like FastBlit,
for any Amiga, but with a few additional bonuses:
With KickStart 39.xx or lower, the WaitBlit routine used by the system
will be replaced by a routine that doesn't slow down the blitter that
much while busy-looping.
With KickStart 37.xxx, the WaitTOF, WritePixel, ClearEOL, ClearScreen,
SetAPen, SetBPen and SetDrMd routines will also be replaced with more
optimised routines.
Should work for ALL Amiga's, except for the earliest A1000 model
computers (which lack the ExtraHalfBrite modus and suffers from a bug
in the Agnus chip).
Among things that should be notacibly faster with fbl installed is
menu browsing, WB updating, text scrolling and benchmark programs that
tests the gfx capabilities (like AIBB). And if you have problems with
"snow" when using the A2091 controller with full SCSI DMA, fbl might
help quite a bit.
To use this program, run it from CLI, or just add it to your startup-
sequence or user-startup.
Caveat: If your system runs on chip-mem and/or slow-mem only, fbl
*can* be dangerous to use, since the blitter then will have full
priority over the CPU, and when showing screens with high resolution
and/or many colors, the CPU can be prevented from memory access for
too long, and interrupts can crash. If you still want to run fbl, use
the keyword "SLOW", i.e. "fbl SLOW" (case sensitive). This will just
install the graphics.library patches, but not turn on the blitter
priority.
Changes since last version (3.0):
Fixed incorrect APen/BPen with more than 4 colors (made funny effect
on the wb screen).
This little thingy is ofcourse FreeWare, but if you REALLY like it,
you can send me your sister as payment.
Enjoy,
*Art