The newsletter focused on
assembly language programming for the
Apple II personal computer. Initially, the programs were only written for the
MOS 6502 microprocessor, but this expanded to the
65C02,
65802, and
65816 microprocessors as the Apple II family continued to develop. Sander-Cederlof used the S-C Macro Assembler, which he had authored and sold himself, to publish his programs. At its peak, the newsletter had over 1000 subscribers–mainly those learning to program in assembly language–with issues being mailed all over the world. == See also ==