Sinclair ZX Series User Manual

elements at a time and hand it over to the print routine.
POSITION OF ARRAY ELEMENTS ON PRINT OUT
Each element of the array, e.g. A$(1,256) contains one byte of information. A byte has eight bits
which have the following values:
Each bit in each byte in the array represents one dot on the high resolution printout. Hence each
element of the array represent eight successive dots, the left-most dot corresponding to bit 7 whose
value is 2
7
and the right-most dot bit 0.
Hence:
Hence dots (0,0) through to (7,0) are represented by bits 7 through to 0 of Array Element A$(1,256).
If you wish to print all of those dtos, then use the command:
LET
A$(1,256)=
CHR$
(2**7+2**6+2**5+2**4+2**3+2**2+2**1)
If you only wish to print the first three dots then use the command:
LET
A$(1,256)=
CHR$
(2**7+2**6+2**5)
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
Dot(0,0) corresponds to bit 7 of array element A$(1,256)
Dot(1,0) corresponds to bit 6 of array element A$(1,256)
Dot(255,255) corresponds to bit 0 of array element A$(32,1)

Sinclair ZX Series Specifications

General

Brand	Sinclair
Model	ZX Series
Category	Printer
Language	English