Bad FDC command 56

Hi all,

Using RPCEmu 0.8.9 on a Mac, with RISC OS 5.22, and I’m trying to access a floppy image. I keep getting the error ‘Bad FDC command 56’ and the application closes. This even happens if the floppy drive is empty. Works fine under RISC OS 4.39 on the same install.

Cheers,

Gerald.

Using RPCEmu 0.8.9 on a Mac, with RISC OS 5.22, and I’m trying to access a floppy image. I keep getting the error ‘Bad FDC command 56’ and the application closes. This even happens if the floppy drive is empty. Works fine under RISC OS 4.39 on the same install.

I thought the non-functionality of floppy drives was a known bug/issue – listed in the info on the RPCEmu web site.

Couldn’t find any known bugs relating to floppy drives (or, in fact, any list of known bugs).

I did know about the lack of support for hard drive images with RISC OS 5 (or rather, it being disabled due to another problem).

Hey ho, just have to do what I want to try on some real hardware.

Perhaps there’s a parallel internet to which I’m connected and nobody else is, but when I search those exact terms the 1st hit is someone asking that question back in 2013 on this ROOL forum. I explain the problem in some detail and suggest contacting the RPCEmu authors.

A while later I checked and turns out they didn’t bother (sure fire way to not get a problem fixed is to not report it!), so I fixed it myself, which is the 2nd hit in the Google search.

Here it is being checked in by the RPCEmu maintainers so any version of RPCEmu post dating that will work fine.

Perhaps there’s a parallel internet to which I’m connected and nobody else is, but when I search those exact terms the 1st hit is someone asking that question back in 2013

Damn, that long ago. Obviously gave me chance to forget part of the answer i.e. the fix being in later versions I hadn’t taken note of – merely recalled the reference to the bug.
My install on a PC, with no floppy so of little other than passing interest.

Mind you, I think the fix possibly post-dates the latest version built for the Mac.

firtle,.. yep, the only version which would have the fix is v0.8.12. Latest pre-built binary for Mac is 0.8.9
I seem to recall comment about deprecated items that are required for the build or something.

RPCEmu needs version 4 of the Allegro game library (version 5 is the current version). The Mac implementation of Allegro 4 relies on code in OS X which is no longer supported, so RPCEmu cannot be built on any version of OS X newer than Snow Leopard.

Perhaps there’s a parallel internet to which I’m connected and nobody else is

Nope – I’m just pretty crap at finding stuff on the Internet…always have been. Don’t know why!

Nope – I’m just pretty crap at finding stuff on the Internet…always have been. Don’t know why!

The search engines have a learning algorithm. If you start searching efficiently it learns quickly the type of thing you want and promotes pages with that category of information in your list of results.¹

The problem is that if you start with a search that is off target it helps you refine the error.

¹ Sprow had an entertaining session searching a while back. Jeffrey had mentioned “nice racks” my queries came up with furniture/racking info. Sprow lost a few hours because his search seemed to be weighted differently…