[vcf-midatlantic] hard drive and floppy disk emulator

Alan Hightower alan at alanlee.org
Sat Jun 4 09:00:56 EDT 2016


That would be difficult. It's a closed source commercial project. He
doesn't provide source or a partitioned net-list. So integrating
anything else with his emulation code on the FPGA is nigh impossible. 

That being said, it seems to me writing a PCM recorder/player at some
harmonic of 5 (MFM), 7.5 (RLL), or 20 (ESDI) MHz should be


On 2016-06-03 11:10, Joseph Oprysko via vcf-midatlantic wrote: 

> I agree. Although since its FPGA based, one could download additional cores
> and have it be a hardware based emulator for vintage systems as well.
> On Friday, June 3, 2016, Dave Wade via vcf-midatlantic <
> vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:
> Interesting. The website for the product is http://www.drem.info [1]
> Although the one thing I would have to question is that it says it's the "only" MFM/RLL hard drive emulator, which is not accurate.
> I think it's the only combined unit that does both in one module....
> .... but it looks like it will only do one at once, and so its very
> expensive for floppy use...
> On Wednesday, June 1, 2016, Rolf Levenbach via vcf-midatlantic < vcf-
> midatlantic at lists.vintagecomputerfederation.org <javascript:;>> wrote:
> A MFM & RLL hard drive and floppy disk emulator on eBay:
> http://www.ebay.ca/itm/-/301968006996 [2]
> Rolf

> --
> Normal Person: Hey, it seems that you know a lot.
> Geek: To be honest, it's due to all the surfing I do.
> Normal Person: So you go surfing?
> Normal Person: But I don't think that has anything to do with knowing a

> Geek: I think that's wrong on a fundamental level.
> Normal Person: Huh? Huh? What?


[1] http://www.drem.info
[2] http://www.ebay.ca/itm/-/301968006996

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