Leningrad1 /128K

I decided to “bring my computer to mind” a little - untangle a bunch of wires and
connect them into bundles. After such a procedure (I had to resolder some things)
glitches appeared:
the test ROM gives an error in the configuration port of bank 0 sector 3 written 00000000
read 00000100. Similarly with the t_rom64 test (in passing the question - what’s there for
T-constant and what does the int-vector show?)

$$$ With best wishes ... Alex

P.S. Addition to the letter sent on Monday (i.e. what is written above
:) - I wrote a simple test in BASIC (I connect all the pages one by one and
write down the number of this page at address 60000, and then in the same order
read the values from these pages) - everything works ok, pages
switch, but if you install a test ROM or run some program for
128, glitches begin (programs freeze, and the test ROM shows an error).