Displaying String on Free42 & DM42

[Werner]

Hi Bill.
To double the font's width and height, each pixel has to become a block of 4 pixels.
Horizontally, that is simple: just draw the character twice. Vertically, however, it amounts to converting eg 53 = 110101b to 111100110011b or 3891.
No need to figure out how I did in in the routine I posted as I found a faster, shorter and easier way (triple win!):

Code:

 128
 /
 7
 X<>Y
>LBL 03
 IP
 RCL+ ST L
 STO+ ST X
 DSE ST Y
 GTO 03
 3
 *

The loop is used to space the bits apart, and the 3 * doubles them.
DSP2XY is still quite slow though.

Cheers, Werner