22. Pike, R. "The Blit: A Multiplexed Graphics
Terminal". _AT&T Bell
Laboratories Technical Journal 63_, 8 (Oct. 1984).
The thing I miss most about the 5620 is Cargill's wonderful little
debugger "pi". Does anyone know if it was ever ported to X, and
if so, is the source available?
I remain amazed that nobody at Bell Labs ever ported it to Plan 9,
although I suppose both the use of C++ and the completely new symbol
table format in Plan 9 executables would make that a challenge.