Determining variable length (number of digits) possible?

[CuriousOne]

FOURD=12345
FOURD=FOURD>>2 should return FOURD=123, right? but it returns 11419 !

[CuriousOne]

Forgot to mention, startup shift fixed:
shiftout datapin,clockpin,1,[X-DLEN+DSTART, y]

[mpgmike]

FOURD=12345
FOURD=FOURD>>2 should return FOURD=123, right? but it returns 11419 !

Not sure how that happened. First, you wouldn't get "123", as Right Shift 2 (>> 2) is the same as Divide by 4; in which case 12345 >> 2 = 3086 and not 11419.

Since you're dealing with a display, you may have to treat each place holder as a unique byte (perhaps value + $30 to convert it to ASCii); "12345" would be saved as $31, $32, $33, $34, $35 in an array. You can then shift your pointer 2 places to look at 123 by itself (as 3 individual bytes, of course).

[CuriousOne]

I've written a PC based converter, which deals with ASCII conversion. It generates PBP code for EEPROM.

[CuriousOne]

So back to shift.
How to trim one variable from left to right, to value of another variable?

say trim 12345 by 3 - mean, make 123 digits from it.

[HenrikOlsson]

12345 / 10 = 1234
12345 / 100 = 123
12345 / 1000 = 12
12345 / 10000 = 1

/Henrik.

[CuriousOne]

This requires too many IFs....
On spectrum we had X=LEFT(Y,Z)....

[Ioannis]

You are mixing string with numeric values...

12345 is a decimal number.

LEN or any other similar command (LEFT, RIGHT, MID) will take as an input just string characters, not numeric values.

Ioannis

[pedja089]

Look up DIG. It isolates single digit, as you need it, without IF...