Syntax/Syntax ZX80 v2 n11

Use these lines in 4K programs requiring sines between 0 and 90 degrees.

At press time, CAI’s Bob Swann confirmed reader reports- 100’s of Widgets shipped. Expect printers in 2 wks, tape drives in 4. Widgets chew up the top 4K of memory – 2 for tape and 2 for printer.

Storing machine code in REM statements.

The object of this game, rewritten from one published by Creative Computing, is to get the numbers in ascending order from left to right.

It is with great displeasure that I am returning my Sinclair ZX80. Response from Nigel Searle.

This program operates as a digital clock, showing A.M. or P.M. and changing at 12:00.

Bob Maunder’s new book is very different from The ZX80 Companion. It aims to appeal to every ZX81 owner, but more to “students” of computing whether at home or at school.

A new company, Heuristics, is the exclusive distributor of ZX81 and 16K RAM pack schematics. They also plan ZX81 hardware and software.

Quickly find the unused section of tape for SAVEing 8K programs on multi-program tapes on any RAM size.

For only $149, you now get 8K BASIC, continuous display, the choice of channel 2 or 3 and a newly styled case.

ZX-Microfair in London; Microace 8K ROM has bugs; Microace regulator; floating point in 8K ROM.

MCD Name Changer.

Sinclair’s first 8K ROM had a few bugs; list of changes to the 8K ROM map.

This adventure game of survival challenges you with man-eating spiders, giant bats, pits and monzxers. You are in a cave with 5 levels of 20 rooms each.

4K ROM users: instead of building our Cassette Eavesdropper (Dec. 80) to reduce loading noise, try a dual mini-plug from Radio Shack.

Potential solution to overheating; labeling keys on big keyboards.

Clive Sinclair of Sinclair Research demonstrated his ZX81 printer at the the US introduction of the ZX81 computer in Boston on Oct. 7.

R.B. Turner plans to interface his 4K/2K MicroAce to the MM57109 programmable calculator chip to provide many scientific calculations.

To print 8x size characters in reverse video, change these lines from Big Characters (Dec. 80).

John Sampson of College Point, NY, called in response to the letter in the Oct. 81 issue about The Amazing Active Display.

Jon Passler noticed an error in his 8K Roundoff routine (Oct. 81).

SABRE Systems has developed a multipurpose memory expansion board to use in a variety of RAM/EPROM combinations.