RS232 Communications Part 1 – Day, Michael E.

Compute II April/May 1980, p. 16

Technical data on RS-232 pins, voltage, and timing.

Improved Pulse Counting Software for the 6522 VIA – De Jong, Marvin L.

Compute II April/May 1980, p. 36

Keeping time with the 6522 Versatile Interface Adapter (VIA). (The 6522 was al ... PET/CBM and the VIC-20).

Hard Copy Graphics for the KIM – Sproul, Keith

Compute II April/May 1980, p. 43

High-resolution plotting with the Visible Memory video board from Micro Techno ... l. Includes source code.

Songs in the Key of KIM – Hawkins, George W.

Compute II April/May 1980, p. 54

Song data for four-part and two-part harmonizations of Jingle Bells, Deck the ... Notes, Issue 16, p. 1).

Review: KIMEX-1 PROM, RAM, and I/O Expansion for the KIM – Herman, Harvey B.

Compute II April/May 1980, p. 56

If this review seems familiar to you, you may have read it in Issue 3 of COMPUT ... Engineering Associates.

Some A/D and D/A Conversion Techniques – De Jong, Marvin L.

Compute II June/July 1980, p. 5

Circuit diagrams for A/D and D/A conversion circuits. Includes source code for ... r program for the KIM-1.

Some Routines from Microsoft BASIC – Butterfield, Jim

Compute II June/July 1980, p. 13

Memory maps of Microsoft BASIC for the KIM-1, SYM, AIM, and OSI versions.

Nuts and Volts – Zumchak, Gene

Compute II June/July 1980, p. 17

Diagrams and considerations for building I/O interfaces with transistor–transistor logic (TTL) chips.

Programming & Interfacing the 6502, with Experiments – Butterfield, Jim

Compute II June/July 1980, p. 21

Review of Programming & Interfacing the 6502, with Experiments (Howard W. Sams & Co., 1980).

Fast Random Numbers for the 6502 – Beach, Edward B.

Compute II June/July 1980, p. 24

A compact (two instructions) for generating random numbers on the KIM-1. Includes source code.

Speeding up FOCAL – Knopf, Jim

Compute II June/July 1980, p. 25

Two tips for improving the performance of programs written in FOCAL-65E for the KIM-1.

RS232 Communications Part 2 – Day, Michael E.

Compute II June/July 1980, p. 27

In part 1, Michael described the full RS-232C standard with associated communic ... of the RS-232 interface.