Has anyone else noticed this before?

[WMH]

Hey guys,

I was messing around with my //c today when I happened across something unusual in the Monitor ROM.

At $FAB4, there's some sort of memory card test routine. It fails instantly with "?OVERFLOW ERROR" and says that the "1MB Memory Card" failed. This is obviously inaccurate, but has anyone else seen this before?

Here's how to get to it:

]CALL -1370
(Let the system reboot, then
]CALL -151

*FAB4G

It's pretty hard to get, and sometimes it won't run for me, but it seems to work more reliably with a call to -1370. If it won't work I can post a picture.

Thanks guys.

 

[HoJoPo]

You probably have a memory expansion //c, which supports a 1MB memory card. I have one in my IIc+, they're a fairly rare option to find.