Can you tell me where I could get the SUNrem ROM you mentioned? Will this EPROM work with a standard 800k drive like those used in the Mac Plus and Mac SE?
I'm not sure what a Lisa Lite card is. The Lisa seems to be a 2/10 and the I/O board supports both a integrated Profile and 400k drive.
Very much appreciate your help.
Geoff
On Mar 24, 2011, at 5:59 AM, Diogenes45 wrote:
> Hi Geoff,
>
> I had similar problems with my 400KB and 800KB drives- you should have
> a known good 800KB drive (test it in your Mac Plus or Mac 512 KB etc.)
> Then you will need the SUNrem 800KB floppy disk EPROM for the Lisa I/O
> board, otherwise your 800KB floppy won't be recognized by the Lisa.
> As far as you told here you should have a Lisa Lite card.
>
> Helmut
>
> On 23 Mrz., 17:20, Geoff Barrall <geoffbarr..._at_email.domain.hidden> wrote:
>> I'm also having issues with a 400k drive (dated sept 1984) in one of my Lisas. The Lisa is a newer model and has an integrated ProFile above the drive. The floppy drive looks similar to another tested good Lisa floppy drive I have from an earlier model (dated dec 1983) but that drive has a daughter board next to it in it's own Lisa and doesn't seem to work as a replacement (seemed to exhibit random activity) in the newer one. I've also tried a more modern 800k drive which also didn't work (same issue). FInally I tired a 400k drive from a 512k Mac from approx the same era but same issue there. Can anybody provide me with guidance on which kinds of Floppy Drive should work so I can determine if the issue is with drive compatibility or possibly an issue on the I/O board?
>>
>> Many thanks,
>> Geoff
>>
>> On Mar 23, 2011, at 2:46 AM, Diogenes45 wrote:
>>
>>
>>
>>> I have just examined the 400 KB disk drive: Many of the sub miniature >>> caps are dried-out (I have a special capacitor tester) - the signal >>> from the PCB to the R/W heads and vice versa is very weak and >>> distorted. >>> I think it's futile to exchange all caps on the board... the best >>> solution would be a replacement drive (or original Sony controller >>> board) or even better: an upgrade to a 800KB drive.
>>> Helmut
>>> On 22 Mrz., 22:56, "Terry Stewart" <te..._at_email.domain.hidden> wrote: >>>> Helmut,
>>>> I do have two non-working drives which aren't worth much to me. If you like >>>> I could have a go at extracting the pad from one of them and posting it to >>>> you? It's so small posting charges will be trivial. Would you like me to >>>> give it a go?
>>>> Terry (Tez)
>>>> ----- Original Message ----- >>>> From: "Diogenes45" <helmut_p..._at_email.domain.hidden> >>>> To: "LisaList" <lisalist_at_email.domain.hidden> >>>> Sent: Wednesday, March 23, 2011 3:28 AM >>>> Subject: 400KB Lisa floppy drive non operational- felt pressure pad is
>>>> missing
>>>>> Hello! >>>>> I have a problem with my 400KB Lisa disk drive: The Read/Write heads >>>>> have no contact to the magnetic media because the pressure pad with a >>>>> small round piece of felt is missing now,and I have no idea where it >>>>> is gone.... it's not inside the drive or the Lisa...I have searched >>>>> everywhere, but I think, it's hard to find such a tiny piece in a >>>>> large room....no luck so far after many hours of intensive search. >>>>> Do you have any idea where I can get this small piece?
>>>>> Thanks! >>>>> Helmut
>>>>> -- >>>>> ----- >>>>> You received this message because you are a member of the LisaList group. >>>>> The group FAQ is athttp://lowendmac.com/lists/lisa.html >>>>> To post to this group, send email to lisalist_at_email.domain.hidden >>>>> To leave this group, send email to lisalist+unsubscribe_at_email.domain.hidden >>>>> For more options, visit this group at >>>>> http://groups.google.com/group/lisalist
>>> -- >>> ----- >>> You received this message because you are a member of the LisaList group. >>> The group FAQ is athttp://lowendmac.com/lists/lisa.html >>> To post to this group, send email to lisalist_at_email.domain.hidden >>> To leave this group, send email to lisalist+unsubscribe_at_email.domain.hidden >>> For more options, visit this group athttp://groups.google.com/group/lisalist- Zitierten Text ausblenden -
> > -- > ----- > You received this message because you are a member of the LisaList group. > The group FAQ is at http://lowendmac.com/lists/lisa.html > To post to this group, send email to lisalist_at_email.domain.hidden > To leave this group, send email to lisalist+unsubscribe_at_email.domain.hidden > For more options, visit this group at http://groups.google.com/group/lisalist
-- ----- You received this message because you are a member of the LisaList group. The group FAQ is at http://lowendmac.com/lists/lisa.html To post to this group, send email to lisalist_at_email.domain.hidden To leave this group, send email to lisalist+unsubscribe_at_email.domain.hidden For more options, visit this group at http://groups.google.com/group/lisalistReceived on 2011-03-24 12:07:37
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