EasyManuals Logo

Sinclair ZX81 User Manual

Sinclair ZX81
92 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #73 background imageLoading...
Page #73 background image
like with. If you then type
NEW
again it will not affect these twenty bytes.
The top of memory is a good place for
USR
routunes, safe (even from
NEW
) and immobile. Its main
disadvantage is that it is not saved by
SAVE
.
Summary
Functions:
USR
Statements:
NEW
Exercises
1. Make RAMTOP equal to 16700 and then execute
NEW
. You will get an idea of what happens when the
memory gets full.

Table of Contents

Other manuals for Sinclair ZX81

Preview: Assembly Instructions
Assembly Instructions43 pages

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Sinclair ZX81 and is the answer not in the manual?

Sinclair ZX81 Specifications

General IconGeneral
ProcessorZilog Z80A
Processor Speed3.25 MHz
ROM8 KB
InputMembrane keyboard
StorageCassette tape
Power Supply9V DC
Dimensions167 mm x 40 mm x 175 mm
Release Year1981
ManufacturerSinclair Research
Weight350 g
Operating SystemSinclair BASIC
RAM1 KB
PortsTV out, expansion port
DisplayTelevision (RF modulator output)

Related product manuals