Denial

Is there a clearer description of the registers of the Final Expansion 3 cart than the User Manual? I've tried to extract a summary of the modes but there's still a few areas that aren't too clear to me.

if you can read C - the VICE source is always a good reference

Ah, ok. Hadn't thought of that. I did once try to enable FE in VICE but couldn't work out how to.

Is there any documentation on the DIP switches? From the schematic it is clear that 1 & 2 control the device number. It seems that 3 is unused but 4 is somehow connected to the RESET line of the ATMEGA.

Here's what the DIP switch settings do.

1 - Drive Number
2 - Drive Number
3 - Cartridge Enable
4 - SD2IEC Reset

Switch 3 enables or disables the FE3 cartridge. The SD2IEC is always enabled so this switch only affects the other FE3 functions.

Switch 4 controls whether or not the SD2IEC is reset when using the full reset button. On the Rev 10, this button is blue. On the Rev 11, this button is black.

Heather

Thanks Heather, I'll add a section to my manual for this.

I don't have the exact combinations for the drive number switch settings with me but I'll post them here tonight so you have the exact switch settings for each drive number.

Heather

From the schematic it looks to be:

S1 off, S2 off = 8
S1 on, S2 off = 9
S1 off, S2 on = 10
S1 on, S2 on = 11

I confirmed all your drive number switches on the Rev 11.

Heather

srowe wrote:From the schematic it looks to be:

S1 off, S2 off = 8
S1 on, S2 off = 9
S1 off, S2 on = 10
S1 on, S2 on = 11

They copied the DIP switch scheme from the 1541-II

OK, I've added a new appendix and uploaded a new version of the document and PDF.

Looks good!

Heather

Great work, much appreciated, thanks!