Arrived today.
Not working, i have repair the keyboard now is working perfectly.
Need only a heatsink for the ULA.
This is a ZX81 Issue 3 the ULA are the last produced, the 2C210E.
Matteo
My first ZX81
Re: My first ZX81
A information,
where is the string for check the 1k memory?
Thanks,
Matt
where is the string for check the 1k memory?
Thanks,
Matt
Re: My first ZX81
Not sure what you mean.
There is no command to check RAM.
You may use PRINT PEEK 16389 which gives 68 for 1k and 128 for 16k RAM. This is the dirty variant.
This should give RAMTOP address (first line) and RAM installed/available (second line).
Not sure if brackets are needed, dont think so.
There is no command to check RAM.
You may use PRINT PEEK 16389 which gives 68 for 1k and 128 for 16k RAM. This is the dirty variant.
Code: Select all
PRINT PEEK 16389*256+PEEK 16388
PRINT PEEK 16389*256+PEEK 16388-16384
Not sure if brackets are needed, dont think so.
Re: My first ZX81
Thank so much PokeMon.
Yes i said the string's you mean.
Thanks so much,
Matt
Yes i said the string's you mean.
Thanks so much,
Matt
Re: My first ZX81
PokeMon wrote: ↑Wed Oct 28, 2020 9:59 pm Not sure what you mean.
There is no command to check RAM.
You may use PRINT PEEK 16389 which gives 68 for 1k and 128 for 16k RAM. This is the dirty variant.
This should give RAMTOP address (first line) and RAM installed/available (second line).Code: Select all
PRINT PEEK 16389*256+PEEK 16388 PRINT PEEK 16389*256+PEEK 16388-16384
Not sure if brackets are needed, dont think so.
This RAMTOP code also goes with Lambda 8300.
Best regards
Jesper Petersen
Jesper Petersen
Re: My first ZX81
Here are some games to try in 1K.
https://sinclairzxworld.com/viewtopic.p ... res#p45132
Next link will be p2wav so you can load them as sound
viewtopic.php?p=1690#p1690
https://sinclairzxworld.com/viewtopic.p ... res#p45132
Next link will be p2wav so you can load them as sound
viewtopic.php?p=1690#p1690