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Re: Micro sci controller
- Subject: Re: Micro sci controller
- From: "Michael J. Mahon" <mjmahon@aol.com>
- Date: Thu, 10 Mar 2005 12:03:41 -0800
- In-reply-to: <d0pq3d$km7$1@newsread.albacom.net>
- Newsgroups: comp.sys.apple2
- References: <d0pq3d$km7$1@newsread.albacom.net>
- User-agent: Mozilla Thunderbird 1.0 (Windows/20041206)
- Xref: g2news1.google.com comp.sys.apple2:9354
Mirko wrote:
Hi all,
I bought some apple ii cards on ebay, one of those is a Micro sci drive
controller, I put it on my Apple IIe and it is functioning, anyone knows
what are the advantages of using it ? I'd like to know why does it hold its
own Eprom, is it to control a dos/prodos cache ?
All Apple Disk ][ controllers have their own ROM--the boot ROM.
Real Apple controllers have two ROMs, one implements the logic state
sequencer that performs the data separation function.
Both Apple ROMs are small 20-pin DIPs.
I suppose this controller should be faster than standard disk II, but don't
know if it can handle higher density diskettes (probably not using standard
disk II drives..)
No, it is a "standard" Disk ][ controller, running at standard speed.
Does anyone have a link with more info on it ? II would appreciate if anyone
has a MicroSci disk utility image to share on the internet (I think the card
was supposed to have at least one test disk ...)
Probably, but it has no other practical functionality than as a
Disk ][ controller.
-michael
New Applesoft BASIC interface for NadaNet networking!
Home page: http://members.aol.com/MJMahon/