New profile posts

What's new Featured content New posts New media New media comments New resources New profile posts Latest activity
croissantking
IMG_9807.jpeg

New visitor. A parts dual 867.

The case design is actually quite logical and well engineered but it’s crazy just how much they’ve hacked this case design about to beef up airflow. I think someone must’ve been panicking about the amount of heat the 7455s put out.
  • Like
Reactions: ry755, demik, Boctor and 4 others
View previous comments…
croissantking
croissantking
I got this working - PSU needed a recap.
Phipli
Phipli
Yeah, I suspect the same with mine, I just couldn't afford the caps when I got it and don't want to put in an order for just the caps with the cost of shipping these days. At some point I'll get around to it :)

I have booted my MDD from a PC PSU so I know it works otherwise.
croissantking
croissantking
@Phipli I hear you regarding the cost of … everything. My symptoms were that the computer’s front light would light up momentarily when pressed and then nothing. A few of the caps were noticeably bulged. I replaced everything apart from the three large bulk caps and it sprang right to life after that.
  • Like
Reactions: Snial
BrunoBr
Hello there !
I've been using Macs since 1999. Always looking for the latest and greatest tech but just got interested in reliving previous experiences with Apple hardware. Don't get me wrong, the latest Mac models are great, but kind of miss that soul previous Macs had.
Boctor
The Meanwell RPT-60A is just too tall to be a safe fit in the LC 475 power supply's chassis... The two heatsinks touch the top housing's edges even if you try to insulate them by brute force, and I'm afraid if I leave the top off instead, it's just going to short against the case's RF shield.
View previous comments…
Phipli
Phipli
I actually mounted it with little brackets to the side. The stand-offs were just spacers.

20260318_230818_475PSU.jpg
Boctor
Boctor
Oh, right, I saw yours while lurking the thread with the RPT60-A builds! If I had access to more than basic soldering/crimping tools, that'd probably be a much nicer way to go about it, especially since then you don't have to run jump wires for the two chassis/safety grounds.
Boctor
Boctor
I fixed the insulation issue with HS1 hitting the safety ground in a way people familiar with this will either love or hate. Since the printed base is too thick and makes it impossible for any joints to touch the chassis on the bottom, even under extreme pressure, I just took the existing, plastic insulation layer and flipped it upside down. Knocked it, pushed on it, tilted it, no fuse explosions, no live chassis.
ClassicGuyPhilly
Feeling the Cray-1 super power! From the System Source Museum in MD
1000029431.jpg
  • Wow
  • Like
Reactions: Snial and Phipli
View previous comments…
Snial
Snial
@Chuckdubuque : Cray-1 IT staff (mostly plumbers) all smoked in the 1970s.
Snial
Snial
@ClassicGuyPhilly I didn't really grasp the Cray-1 architecture up until a couple of years ago. The architecture diagrams I saw in the 80's implied massive execution unit parallelism, but primarily it's a large register cache with a pipelined EU for each Vector and some scalar opcodes (with chainable operations across EUs). https://www.chrisfenton.com/homebrew-cray-1a/
ClassicGuyPhilly
ClassicGuyPhilly
@Snial I'm glad you have such a firm grasp...you have quite a challenge ahead of you homebrewing one of your own. ;)

That said I'm seriously considering having a set builder make me a full scale replica for my living room which could be broken down for rentals
  • Like
Reactions: Snial
MacSweden
Macfan since the mid 1980´s. Today only iMacG3 but will buy SE or SE/30 soon. Have had lot´s of Mac through the years but non left, sad.
  • Like
Reactions: Snial
Snial
Snial
OK, so if you could pick a set of 8 vintage Macs for your collection (68000 to G5, desktops/laptops/servers), what would they be? I've deliberately limited it to 8 to force hard decisions ;-) !
MacSweden
MacSweden
Hi, Well I would say ... SE, SE/30, Quadra 700, Iici, LC III, LC 475, iMac G3 and PowerMac G4 AGP.
  • Like
Reactions: Snial
VMSZealot
Writing software for ancient Apples. Will anyone ever run it?
  • Like
Reactions: slomacuser
finkmac
finkmac
if there's an Apple /// port, I sure will.
VMSZealot
VMSZealot
There's an Apple II version - which fits in 48K. I'd love to hear whether or not it works in your Apple ///'s compatibility mode.
slomacuser
slomacuser
Yes
T
I could take or leave this site, and I'm ambivalent to y'all. (Just rounding out the list of opinions!)
  • Wow
  • Love
Reactions: finkmac and discatte
croissantking
croissantking
Who offended you?
T
Trekintosh
Oh, nobody. There were some statuses earlier that were "I'm leaving this site, I hate you guys" and "I love this site, you're the best", so I was just rounding them out with someone in the middle.
finkmac
I like this site and love all of you people equally even if the feeling is not always mutual.
  • Like
Reactions: Byrd and ClassicGuyPhilly
discatte
discatte
(=ↀωↀ=) <3
Byrd
Byrd
So you love us but are not in love with us? We can accept this.

Signed, the people of 68KMLA (bots too)
ClassicGuyPhilly
ClassicGuyPhilly
People all over the Board (everybody)
Join hands (join)
Start a love train, love train!
  • Like
Reactions: Byrd
obsolete
Does anyone have an ATI Radeon 9000 AGP card that looks like the first one in this post, with the hynix -33 RAM chips? I believe they came in MDD G4 towers, and there was also a retail version. I'm looking for a copy of its firmware, but I can't even find one for sale anywhere.
View previous comments…
obsolete
obsolete
Thanks! I think the Mac 7500s all have QFP RAM, so these three are all 9000s. Looks like all are 64MB cards. The firmware from all three would still be interesting. I believe both copies on The Mac Elite must have come from a hynix -36 card like the one on the right, because the RAM clock speeds are too fast to work with Samsung 4ns RAM. You can use Graphiccelerator to dump the ROMs.
  • Like
Reactions: Phipli
Phipli
Phipli
I found a photo of my 4th one, it is a second -36, so I have two of each of those.
Phipli
Phipli
My G4 is actually setup, so I'll drag the cards out when I get a few minutes.

I think it has a 7500 in it at the moment - weirdly I find it scores slightly better for 2D QuickDraw.
feeef
Made on a Mac IIfx with with a Digitizer II tablet and Photoshop 3.0
mac-lcIII-hd.jpg
Back
Top