Posted By
MIK
on 2021-12-19
14:19:32
 |  Re: Non working Plus 4
Could be the 3+1 software roms, if it finds a fault with these while booting up it can dump you into the monitor.
Thankfully they can be taken out and left out..., if your problem turns out to be the 3+1 roms your Plus/4 will look like a C16 with 64K on the BASIC screen. Some people take them out anyway as they don't use the software and it can save having extra heat inside the machine from powering them.
3+1 HIGH Rom
hardware/C317054-01
3+1 LOW Rom
hardware/C317053-01
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