Sinclair ZX80 / ZX81 / Z88 Forums

Moggy wrote: ↑Wed Jan 24, 2018 3:35 pm It's ZX80 BASIC not ZX81/TS1000 BASIC which lacks the TLS function.

Moogy,

thanks, will save me time..

trying to edit 1002 in EightyOne :
i get 1002 LET A$=TL ["S"] $(A$) [L]

This routine works with most characters; it uses A$ as the string to be output in inverse characters, as follows: 10 LET A$="DONKEYSOFT MMXVIII ZX80 4K ROM" 20 GO SUB 1000 30 STOP 1000 REM INVERSE ROUTINE 1001 PRINT CHR$(CODE(A$)+128); 1002 LET A$=TL$(A$) 1003 IF NOT A$="" THEN GO TO 1001 1004 PRIN...

We are not adding 256 to the low byte... when we do something like PRINT PEEK 16388 + 256 * PEEK 16389 To display the current value of ramtop you have to remeber the order of processing. the computer will do both PEEKS then it will multiple the second PEEK [highbyte] value by 256 and finally add on...

This must be really Obvious!!!!! But it is NOT computing between the ears. (or on paper). :oops: Problem: why do you add 256 to the low byte decimal before multiplying by the high order decimal? :roll: :roll: using a hex calculator there is no need for any additon . and it is not that i can't get th...

Count me in! :D And, can you post one more article (ComputerDigest, Feb. 1985) here? DesSony sorry but I am unable to track it down.. :cry: :cry: however i found this ICYMI, https://archive.org/details/computermagazines?sort=&and[]=date%3A2%2F25%2F1985&and[]=languageSorter%3A%22English%22&and[]=med...

Count me in! :D And, can you post one more article (ComputerDigest, Feb. 1985) here? DesSony sorry but I am unable to track it down.. :cry: :cry: however i found this ICYMI, https://archive.org/details/computermagazines?sort=&and[]=date%3A2%2F25%2F1985&and[]=languageSorter%3A%22English%22&and[]=med...

http://www.classiccmp.org/cini/pdf/rand ... (0185).pdf

found this. reading..... any one??

Excellent.