IBM 5150 Hardware Reference Manual page 390

w
Workspace (BASIC Variables) 3-23
Write (Cassette) 3-8
Write (Cassette Interface Hardware) 2-20
r'""\
Write Data 2-106
Write Enable 2-106
Write Protect 2-107
Numerics
5 1/4" Diskette Drive 2-110
5 1/4" Diskette Drive Adapter 2-91
32/64 KB Memory Expansion Options 1-3
80 CPS Matrix Printer, IBM 2-70
80 Interpreter, BASIC 1-1
6845 CRT Controller 2-48
8080 Parity Flags B-1
8088, Intel 2-3
8250 INS Accessible Registers 2-134
RS232C-A Asynchronous Communications Adapter 2-123
1-21