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Sinclair ZX81 User Manual

Sinclair ZX81
92 pages
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237
GOSUB
ED set 5,l
238
INPUT
EE xor N set 5,(hl)
239
LOAD
EF rst 40 set 5,a
240
LIST
F0 ret p set 6,b
241
LET
F1 pop af set 6,c
242
PAUSE
F2 jp p,NN set 6,d
243
NEXT
F3 di set 6,e
244
POKE
F4 call p,NN set 6,h
245
PRINT
F5 push af set 6,l
246
PLOT
F6 or N set 6,(hl)
247
RUN
F7 rst 48 set 6,a
248
SAVE
F8 ret m set 7,b
249
RAND
F9 ld sp,hl set 7,c
250
IF
FA jp m,NN set 7,d
251
CLS
FB ei set 7,e
252
UNPLOT
FC call m,NN set 7,h
253
CLEAR
FD prefixes instructions using iy set 7,l
254
RETURN
FE cp N set 7,(hl)
255
COPY
FF rst 56 set 7,a

Table of Contents

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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)

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