[Simh] DEC Pro 350 Emulator

Paul Koning paulkoning at comcast.net
Sun Jun 5 09:25:38 EDT 2016


> On Jun 4, 2016, at 8:11 PM, Johnny Billquist <bqt at softjar.se> wrote:
> 
> ...
> It depends. teledisk, as well as ImageDisk, is a tool you run on a PC. Assuming that PC have a 1.2M 5.25" floppy, this tool can then try to write RX50 format floppies on that hardware, based on information stored in the image file.
> That is, the image file format of these tools are a generic format and tool to recreate various different 5.25" floppies.
> As you probably know, a DEC RX50 is rather different in the low level format to anything you'd find on a PC.
> 
> So recreating an RX50 on this hardware is a bit tricky, and chancy. The controller needs reprogramming, and you need to find some suitable media, and it's still not going to be perfect.

I've written RX50 floppies on a Linux PC, after setting the format to the correct setting (10 sectors per track is the main change).  That was using stock real RX50 floppy media; I wouldn't want to try low level formatting floppies that way.  The interleaving was handled in software (using my FLX utility for manipulating RSTS file systems).

	paul




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