Hi Jeff
Dr Jefyll wrote:
Welcome -- and nice hacking!
Thanks. It's a bit of a time sink but it's enjoyable.
Dr Jefyll wrote:
As for what the thing does, I'm guessing this is one of the older effects pedals that use analog technology for most or all of the actual signal processing, but there's a microcontroller in charge, tweaking the analog control signals and providing the user interface. (The newer gear simply uses Digital Signal Processing.)
I didn't know that there even
are analog multi-FX pedals. This one is very digital but fairly early - about 1995. It uses the same DSP from the original Line6 POD and Digitech Whammy XP-100.
The ROM is big - 48KiB. 34 of that is in use with all the FX logic and DSP programs+data. The bit I was curious about it this testing ROM, specifically for testing the MCU and probably not the whole unit. It does some weird things (like setting decimal and transfer mode and then immediately clearing them).
Dr Jefyll wrote:
Are you a jammer as well as a hacker? There are a few of us on this forum...
Yes I'm a jammer. Only low frequency though
Occasionally I post YT videos about FX pedals or audio hacks, among other trash
You can check out
my channel, but don't feel obliged.