In converting a program from FB^3's FBII emulation to the Mac Toolbox
(a.k.a. Rntm UltraLite) mode, everything has gone smoothly except for these
two lines:

open "O", 1, filename,, volRefNum
write file #1, address, numBytes

(The variables are declared
dim filename as str63, volrefNum, address as ptr, numBytes as long).

Has anyone made a successful conversion of these, or similar, file-handling
statements?

Robert P.