Sinclair ZX80 / ZX81 / Z88 Forums

I have noticed a significant difference in the execution speed of BASIC lines that are at the beginning of a program versus those at the end of a large program. I do not have a "timing" analysis, but I do notice significant impacts of speed when looping to produce speech sounds when the loops are in...

It is UDG (user defined graphics) emulated with WRX hires graphics (Wilf Rigter graphic). (WRX requires a hardware modification to your RAMpack.) One thing that is different is that you are not really hiding basic lines. You just have a huge REM at line 0 and all of your BASIC code comes after. The...

Cool!

XavSnap wrote: ↑Tue Apr 28, 2020 10:12 pm

Code: Select all

1 REM HELLO
2 PRINT "HELLO"
3 REM [DEC : 118,118]
1 REM [DEC : 118,118,0,0,0,0,0,0,0,0,0,0,0,201]

Yup

I was looking for a trick here that I haven't seen discussed yet. Maybe it is, but I just haven't searched thoroughly enough. Anyway, I can describe it here. I have a program in which the last BASIC line, a REM statement, is totally hidden from the program listing. It's intended to contain, of cours...

jdfan1000 wrote: ↑Mon Apr 27, 2020 1:03 am That book was written by someone at RIST (who
made The Parrot):
https://www.timexsinclair.com/book/how- ... uter-talk/

The book is now available on archive.org.

The examples and programs in the book should work with the Parrot.

Excellent resource!

I've been trying to git the repository, but it seems to be empty. Do I need to request access?

If you are still interested, I have a bunch of information on this topic and a working program that generates speech. However, I don't have the manual.

I'm John and have had a ZX81 since 1981. It sat in my parent's attic for at least 35 years. We had to move them out of their house and I found most of my old machine. I have the ZX81 with 16k RAMPack and a Parrot speech synthesizer. These still work, although I can't daisy chain them and get my mach...