Loading from tape easier on some models?

For experts to discuss very technical stuff and newbies to ask why the Spectrum they bought off ebay doesn't work.
Post Reply
Wall_Axe
Manic Miner
Posts: 501
Joined: Mon Nov 13, 2017 11:13 pm

Loading from tape easier on some models?

Post by Wall_Axe »

I have two rubber keyed spectrums. On one hardly any of my games load from tape. I hear the noises but most games don't display the yellow and blue loading stripes.

The other spectrum loads most games first or second time.

Does anyone know why this is?

I think I heard that one revision doesn't need so much volume on the tape recorder but my tape recorder needs the volume turned down low to load anything.
User avatar
1024MAK
Bugaboo
Posts: 3134
Joined: Wed Nov 15, 2017 2:52 pm
Location: Sunny Somerset in the U.K. in Europe

Re: Loading from tape easier on some models?

Post by 1024MAK »

The early ULA chips (issue one and issue two boards) had a slightly different input threshold compared to the later ULA chips.
The issue one and issue two boards also did not use a transistor for the speaker, but issue 3 and later boards do use a transistor to feed the speaker.

But to be honest, these changes are not likely to be the problem. Even between the same issue boards, there may be a slight variation to the volume needed to LOAD.

Will the machine LOAD it's own recordings?

Mark
:!: Standby alert :!:
“There are four lights!”
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb :dance
Looking forward to summer later in the year.
Post Reply