GBA1000 rev4 Build Log
- Thread starter BloodyCactus
- Start date
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ObjectiveD
Member
Hey Bootsie
If you mean component part X25, the 22pin 2mm x2 row female, I was planning on getting one of this 25-pin connectors and cutting it down
http://www.reichelt.de/Female-Conne...ARTICLE=6081&GROUPID=3221&artnr=BL+2X25W+2,54
[edit - just realised this is a 2.54mm spacing and not 2.00mm
]OD
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squareeyes
Member
Well, I had a long hard look around and these are pretty hard to find. You could always check auction number 181116298035 on the other bay and see if you like that, it has the correct pitch (I believe) and is also raised the correct amount off the board ensuring easy soldering and that the hard drive will fit correctly (hopefully). It looks like the support pins at each end will have to be snipped off as holes for these are not present on the GBA1000 board.
Somewhat expensive after shipping but looks like it will give the desired effect with a little work.
Somewhat expensive after shipping but looks like it will give the desired effect with a little work.
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If you mean component part X25, the 22pin 2mm x2 row female, I was planning on getting one of this 25-pin connectors and cutting it down
http://www.reichelt.de/Female-Conne...ARTICLE=6081&GROUPID=3221&artnr=BL+2X25W+2,54
[edit - just realised this is a 2.54mm spacing and not 2.00mm
OD
Thanks, shame about the wrong pitch
Looks pretty good, even with the shipping. Will need a bit of cutting and filing though. Unless I can find anything closer to home I'll probably go with that.
Thanks to both of you for taking the time to look.
squareeyes
Member
no problem, we're on the same journey, may as well share
ObjectiveD
Member
As squareeyes says we're all in the journey 
I've had another look tonight and I think Farnell have a SAMTEC SQT-125-01-L-D-RA receptacle that would do the job:
http://uk.farnell.com/samtec/sqt-125-01-l-d-ra/receptacle-2mm-r-a-50way/dp/1668177
Seems the right pitch and would need trimming down from the 50x contacts, but looks like its £6.39 with free delivery.
Had a look on the other bay and only had up to a 30-pin samtec variant.
OD
I've had another look tonight and I think Farnell have a SAMTEC SQT-125-01-L-D-RA receptacle that would do the job:
http://uk.farnell.com/samtec/sqt-125-01-l-d-ra/receptacle-2mm-r-a-50way/dp/1668177
Seems the right pitch and would need trimming down from the 50x contacts, but looks like its £6.39 with free delivery.
Had a look on the other bay and only had up to a 30-pin samtec variant.
OD
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Thanks, also found this at AmigaKit, not sure if it would work or not.
Anyway, I ordered the connector from the US that squareeyes found, £8.05 all in wasn't too bad really (and a drop in the ocean compared to how much money has gone into this build already). I'll post up here how I get on with it.
My GBA-1000 is complete other than this connector, powered up first time! Well, sort of: it did once I put a working Kickstart in there - damn byte swap eprom programming.. and I bought a OTP 27C4096 too by mistake, so that's in the bin now :roll:
Anyway, I ordered the connector from the US that squareeyes found, £8.05 all in wasn't too bad really (and a drop in the ocean compared to how much money has gone into this build already). I'll post up here how I get on with it.
My GBA-1000 is complete other than this connector, powered up first time! Well, sort of: it did once I put a working Kickstart in there - damn byte swap eprom programming.. and I bought a OTP 27C4096 too by mistake, so that's in the bin now :roll:
ObjectiveD
Member
Powered up first time - great news 
I think I can do the GAL programming but can I ask how did you get the lsi1024 programmed?
I think I can do the GAL programming but can I ask how did you get the lsi1024 programmed?
Powered up first time - great news
I think I can do the GAL programming but can I ask how did you get the lsi1024 programmed?
Well that was easy - I bought it like that
I'm going to need a Xilinx programmer for the 060/Picasso/USB boards though.
The 2.5" IDE connector arrived from the US (www.ebay.co.uk/itm/181116298035) - 4 working days, pretty good.
I did have to hack the sides down a little but looks ok when fitted:
It sits at the perfect level for a 2.5" HDD.
My next problem is ... I can't see the IDE drive from HDtoolbox. I've burned the EPROM for the Oktagon controller, but how can I tell if the driver is actually loaded and working? Should I be able to see a 160GB IDE drive (smallest I could find!) from Workbench 3.1 boot floppy version of HDtoolbox on this controller? I prepped it via WinUAE ok but obviously it's not the same IDE hardware.
I did have to hack the sides down a little but looks ok when fitted:
It sits at the perfect level for a 2.5" HDD.
My next problem is ... I can't see the IDE drive from HDtoolbox. I've burned the EPROM for the Oktagon controller, but how can I tell if the driver is actually loaded and working? Should I be able to see a 160GB IDE drive (smallest I could find!) from Workbench 3.1 boot floppy version of HDtoolbox on this controller? I prepped it via WinUAE ok but obviously it's not the same IDE hardware.
I still haven't solved the IDE problem. However, what I do know is that with an IDE rom in the board I get an error at startup:
"Recoverable Alert: Press left mouse button to continue.
Error: 0BAD C0DE Task: 01203490"
So I assume it's at least trying to read the ROM - since with it removed, I don't get that. I've tried a couple of ROMs now with the same result. So, either a bad programmer or a problem with the board.
Is there anyone UK-based who can try my ROM in their board to see what it does? At least I'll be able to rule something out like that.
"Recoverable Alert: Press left mouse button to continue.
Error: 0BAD C0DE Task: 01203490"
So I assume it's at least trying to read the ROM - since with it removed, I don't get that. I've tried a couple of ROMs now with the same result. So, either a bad programmer or a problem with the board.
Is there anyone UK-based who can try my ROM in their board to see what it does? At least I'll be able to rule something out like that.
If you hold down both mouse buttons on boot you should see the ide controller in the add on device list IIRR. There were two roms for the ide, only one would work for me.
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
I don't get the boot menu but maybe my Kickstart is too old (another problem :roll
Well, more importantly I've made some progress. If I disconnect the HDD then the system boots fine and the correct SCSI modules show up in SysInfo. I can't believe I've never tried disconnecting the drive until now :roll:. Not definitive proof until I connect another smaller capacity drive to it (32GB compact flash ordered..) but it does look like if you connect a 160GB IDE drive to the mainboard the SCSI boot rom throws an error and doesn't initialise.
Well, more importantly I've made some progress. If I disconnect the HDD then the system boots fine and the correct SCSI modules show up in SysInfo. I can't believe I've never tried disconnecting the drive until now :roll:. Not definitive proof until I connect another smaller capacity drive to it (32GB compact flash ordered..) but it does look like if you connect a 160GB IDE drive to the mainboard the SCSI boot rom throws an error and doesn't initialise.
Everything working perfectly, nothing wrong with the board at all. All my problems caused by myself - 32GB Compact Flash sorted the HDD issue. The board definitely doesn't like a 160GB IDE HDD.
Now to install into an A1000 case and get working on the addon cards.
Now to install into an A1000 case and get working on the addon cards.
Finally got the time to start on this project. Is it OK to use 120 Ohm @100MHz ferrite beads instead of 150 Ohms? My guess is that it won't matter, but does anyone have any more insight?
Does anyone have the JEDEC-files for the GALs and the CPLD? I can't find them anywhere. Help please!
If you look for the mouser project I think one value was replaced as it was too hard to find.
PM your email address and I will email them to you.
Which ICs are the absolut minimum to get a picture from the RGB out? Thought I would start with a minimum of components then build step by step to find errors easier.
I started a list below, please fill in or remove if incorrect. For instance no RAM should be required, right?
- IC37 68030 (of course)
- IC12 kickstart
- IC52 agnus
- IC25 video hybrid
- IC23, IC24 74HC245
- IC26 denise
- IC41 paula (necessary?)
- IC50 gary
- IC57 ispLSI1024
- A bunch of discrete components (resistors, caps, etc)
- Any of the GALs necessary?
I started a list below, please fill in or remove if incorrect. For instance no RAM should be required, right?
- IC37 68030 (of course)
- IC12 kickstart
- IC52 agnus
- IC25 video hybrid
- IC23, IC24 74HC245
- IC26 denise
- IC41 paula (necessary?)
- IC50 gary
- IC57 ispLSI1024
- A bunch of discrete components (resistors, caps, etc)
- Any of the GALs necessary?
