Search found 4 matches

by hyttju
Thu Feb 01, 2018 7:12 am
Forum: Hardware
Topic: Lambda 16 memory expansion and ROM question
Replies: 2
Views: 524

Lambda 16 memory expansion and ROM question

Hi! I bought this amazing unit. I have found a rom file for lambda 8300 that will make it more compatible with zx81 software. What eeprom should i use for replacement? Another question: I want to expand the memory to 16k. Is it possible to use ZX81 or timex units memory expand without modifications ...
by hyttju
Thu Jul 20, 2017 10:38 am
Forum: ZX BASIC
Topic: ZX81 strange keyboard problem?
Replies: 28
Views: 2295

Re: ZX81 strange keyboard problem?

I can not change line so it is impossible to run commands.


Here is a picture of what came up when i wrote

10 print "hello world"
by hyttju
Wed Jul 19, 2017 11:31 pm
Forum: ZX BASIC
Topic: ZX81 strange keyboard problem?
Replies: 28
Views: 2295

Re: ZX81 strange keyboard problem?

I was also thinking that the ULA has somehow gone bad No replacements to be found anywhere? If not,then it was end for that computer. It gives a normal white picture with the letter K at the bottom. Only that i can not write anything good on the screen. So many letters writes wrong letters or number...
by hyttju
Wed Jul 19, 2017 10:59 pm
Forum: ZX BASIC
Topic: ZX81 strange keyboard problem?
Replies: 28
Views: 2295

ZX81 strange keyboard problem?

Hi to everyone! I have a zx81 computer. I tried it and it did not responded to my typing so well...about half of the letters and numbers came correct on screen when i typed. Ok...i thought it was a membrane error and bought a new one. Installed it,but the problem is the same! Example. I push the J k...