From The Jargon File (version 4.4.7, 29 Dec 2003) :
raster blaster
n.
[Cambridge] Specialized hardware for bitblt operations (a blitter).
Allegedly inspired by ?Rasta Blasta?, British slang for the sort of
portable stereo Americans call a ?boom box? or ?ghetto blaster?.
From The Free On-line Dictionary of Computing (30 December 2018) :
raster blaster
(Cambridge) Specialised hardware for
bitblt operations (a blitter). Allegedly inspired by
"Rasta Blasta", British slang for the sort of portable stereo
Americans call a "boom box" or "ghetto blaster".
[{Jargon File]
(1995-03-22)