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#1 |
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I recently purchased an A500+ and a bunch of games out of nostalgia, and have gotten it mostly working. First thing I did when I recieved it was to remove the battery (no leakage, thankfully) and clean the pins on all of the socketed chips to make sure everything ran smoothly.
However the darn thing refuses to boot anything from DF0. I have an external FDD but some of the things I wish to play (Team17 games) require me to boot from DF0, crashing with a Software Failure 8000 0003 or similar error when I try to boot them from DF1. I've swapped the internal floppy drive with my external and it hasn't changed anything which leads me to think that the controller chip for the internal FDD is defective. Any ideas what I'd need to do to fix/replace it? Thanks in advance. |
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#2 |
Registered User
Join Date: Sep 2009
Location: Norfolk UK
Age: 43
Posts: 433
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Did you also change the cable(s) over as well? My A600 had a defective IDE cable which mean't that my HD didn't work, perhaps a similar possibility exists for floppy drives.
I don't know about the controller chip - there are experts here who can advise for that. |
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#3 |
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Yeah I've tried using a different cable. The Amiga picks up that the FDD is there and it ticks when waiting for a disk, spins up when one is put in and everything. It just refuses to boot from anything. :/
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#4 |
The 1 who ribbits
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try the external drive on the internal cable, some disassemblely may be required .... also check drive is ds0 for internal FDunit
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#5 |
Registered User
Join Date: Apr 2010
Location: Italy
Posts: 1,136
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disable internal with diode, search post on this forum
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#6 |
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I have tried using the external drive on the internal cable. Same result.
I don't have a Hard Drive attached or diskspare either so I don't think ds0 will help. I'll try disabling the internal drive though, thanks for the tip. I didn't know that was possible. Last edited by ShadowWraith; 22 February 2011 at 19:05. |
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#7 |
Registered User
Join Date: Jun 2010
Location: PL?
Posts: 2,888
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Is there any click hear-able ?
First suspect is CIA - maybe IC socket is bit lousy? Try to press (firmly and gently) CIA's and Paula. OK, LED light or not - verify Pin 1 on cable and both connectors - usually Pin 1 in FDD is opposite to Pin 1 on HDD (Pin 1 on HDD is close to HDD power connctor, on FDD Pin 1 is on opposite side - very common mistake) |
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#8 |
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The drive clicks and the LED light is only on when I'm using the External drive, not the internal. There is no HDD and the FDD is plugged into the correct spot. The chips are all in properly and I cleaned the contacts this morning when I was cleaning the motherboard.
Edit: I can't find anything on disabling DF0 through diode. The only thing I found involved bending the pins on one of the CIA chips and I really do not want to do that. :/ Last edited by ShadowWraith; 22 February 2011 at 19:12. |
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#9 |
Registered User
Join Date: Sep 2006
Location: Thunder Bay, Canada
Posts: 4,323
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iirc the CIA chips are socketed on that board. Swap the CIA chips and see what happens
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#10 |
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I'll give that a try, thanks!
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#11 |
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Swapped the CIA chips around. No change. I'm having second thoughts about this FDD being sound. Going to try and fiddle about with it for a while, see if it needs cleaning.
Edit: Cleaned it out. No change. Trying the external again, but the jumper system confuses me. It's a Chinon FX-354, and the jumpers look like this: Code:
X O O O | X X-X O However, there's a small etching above the jumpers that looks like this: Code:
DS M M 3 - - - 2 | | | D M 0 - - - 1 Google is no help with regards to finding an explanation about the jumpers either. :/ Last edited by ShadowWraith; 23 February 2011 at 00:38. |
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#12 |
Registered User
Join Date: Apr 2010
Location: Italy
Posts: 1,136
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stop it, verify +12 (wire yellow) volt on floppy connector and original internal floppy
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#13 |
The 1 who ribbits
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yes ekk if you don`t know what you are doing you are only going to make it worse
you only need the 6 jumpers in fact never seen a floppy drive configed as ds3 or ds4 looks like drive is setup to be ds0 so thats right unless u have changed the jumpers |
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