Boot Sequence

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Last seen: 1 day 6 hours ago
Joined: Sep 13 2021 - 12:11
Posts: 23
Boot Sequence

Hi All,


Was wondering about how the //e handles booting. I currently have two controller cards, a 19-pin that I use with either my DuoDisk or Floppy Emu, and I just picked up an older Disk ][ controller card, the one with the 20-pin connectors. If I keep the 19-pin controller in slot 6, and put the 20-pin on in slot 5, will the //e ever boot from the slot 5 disks if there's nothing in the slot 6 drives? I know I can probably do a PR#5 command to get it to boot from slot 5, but was curious if the system will look beyond whatever is in slot 6 if both drives are empty.

Thanks for any help.

Last seen: 4 hours 5 min ago
Joined: Dec 20 2003 - 10:38
Posts: 470
It won't look beyond slot 6.

It won't look beyond slot 6. If you have the 19-pin controller in slot 6 then if there’s no disk in that floppy drive, it’ll just run forever.

At one time I had a 5.25” controller in slot 6 but mostly wanted to boot off a card in slot 5. So I wrote a little program that would boot slot 5 and kept that disk in the drive in slot 6

Last seen: 1 day 7 hours ago
Joined: Jul 5 2018 - 09:44
Posts: 618
Wayne is right, if it just

Wayne is right, if it just sits there waiting to boot from slot 6 you will have to hit reset to get a BASIC prompt and then type PR#5.  Wayne's suggestion is a good workaround.  Or just put bootable floppy like a DOS 3.3 master in there and then when you get the BASIC prompt type PR# whatever you want.


Last seen: 6 hours 29 min ago
Joined: Jun 18 2010 - 13:54
Posts: 427
If you're willing to modify

If you're willing to modify the IIe's ROM, there are ways to change the  boot order or even automatically try a different slot if no disk is present.


ROMXe might be a great way to experiment with these ROM modifications. If you just want a turnkey solution, there's also Michael Guidero's ROMeX (also included in ROMXe). Yes, the names are confusing!

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