68kMLA Classic Interface
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| LC 475 Project - Upgrades - Mods | |
| Posted by: joshc on 2024-06-23 04:50:37 Also I'd recommend turning virtual memory off, it kills performance. | |
Posted by: Kamshaft on 2024-06-23 05:26:02LC475 full 040 running at 41Mhz with Spicy O'Clock. Got the full 040 off ebay from that chinese rare chip seller dude bro for $50. I used thermal tape and put a 6100 heat sink on it. Need to swap out out the clock chip to get Appletalk and TCP/IP working. Otherwise solid. (photo image) I see the Spicy o"clock (looks cool) in the photo, but when you say you used "a full 040" and the photo has a LC 040, isn't the model of the 040 one without the FPU? Same as mine? Correct me if I'm wrong. Unless you've posted an older photo? I found this person on ebay.ca - https://www.ebay.ca/itm/385679628138 Is the seller you were talking about? | |
Posted by: Realitystorm on 2024-06-23 06:23:45Operating system? Which version is best and why?I use 7.5.5 to run some older apps in 24bit mode and to use my Apple IIe card | |
Posted by: zefrenchtoon on 2024-06-23 07:41:15Operating system? Which version is best and why?I'm using 7.5.3 on mine, very stable and still able to use my Apple IIe card 🙂 And I'm using a BS v2 with Wifi 😉 | |
Posted by: Powerbase on 2024-06-23 08:30:21Just depress option-cmd while opening the control panel »memory«. You will get an additional pair of radio buttons to choose wether to perfom a RAM check upon startup or not (see attached screenshot).I don't remember seeing that option, except on a few macs here and there. I've always heard that you couldn't disable it, due to it being embedded in the rom (hench the upgraded ROM being able to disable it). | |
Posted by: lmartu on 2024-06-24 01:22:23I like the BlueSCSI because there is a companion board called "EasyOver" that lets it plug into the 25-pin connector on the back of the Mac. On it I have all the software I don't want on every machine but can easily connect and copy it over when needed. Inside the machine I like the SCSI2SD because it fits more nicely into the HD area. The BlueSCSI is based on an Atmel chip which is faked really often by dodgy resellers - I had one BlueSCSI that was not good and I suspect the Atmel "Blue Pill" part wasn't real. I have another which is fine.Unfortunately Noctua does not make a fan that fits the pizza box Macs. But there is a 3d printable frame that allows you to put a smaller quieter Noctua fan in the case, with similar CFM Printables
www.printables.com
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| Posted by: Kamshaft on 2024-06-24 08:02:29 Is there a company that sells a cap kit for the PSU? | |
Posted by: joshc on 2024-06-24 08:11:17Is there a company that sells a cap kit for the PSU? Macintosh LC Series - TechWiki | |
Posted by: Kamshaft on 2024-06-24 09:41:21Man, I ordered my cap kit from them! I should have thrown in the PSU (Trying to save on shipping) lol | |
| Posted by: Kamshaft on 2024-06-24 09:49:15 Would this RAM work? https://www.ebay.ca/itm/304833489030 or 
256MB (2 x 128MB) 72 Pin EDO Memory SIMM 5V 3V 60ns | eBayFind many great new & used options and get the best deals for 256MB (2 x 128MB) 72 Pin EDO Memory SIMM 5V 3V 60ns at the best online prices at eBay! Free shipping for many products!
www.ebay.ca
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| Posted by: Mustermann on 2024-06-24 11:00:45 SIMM are either 5V or 3,3V. You need to know the exact typ of the chips to determine and read datasheet. In this offer the type is not readable, so you have to ask the seller. Some seller tell that 3,3V SIMM will work in 5V computer (as the 475) as well. Usually this is out of specification. There are a few SIMM that have 3,3V chips and voltage regulator on board (but they don't work at 3,3V anymore) So I would not trust that they are 5V and 3V. | |
| Posted by: Mustermann on 2024-06-24 13:08:46 E.g. https://www.ebay.de/itm/155176081322 is using KM44V16104 chips, which are 5V tolerant at data and address lines but need 3,6V max supply voltage. So they may work in a 5V system but are clearly out of specifications. Answer of the seller was: "We tested these 3.3V chips on 5V applications over the years and had not any issue." Not my way to do so. | |
Posted by: Brooklyn on 2024-06-24 14:28:49Would this RAM work? https://www.ebay.ca/itm/304833489030LC 475 maxes out at 36 mb RAM. So no need to add more than a single 32mb EDO stick | |
Posted by: Nixontheknight on 2024-06-24 17:40:09LC 475 maxes out at 36 mb RAM. So no need to add more than a single 32mb EDO stickthere is an extra RAS or CAS line that can allow for 68MB | |
Posted by: Powerbase on 2024-06-24 21:20:14LC 475 maxes out at 36 mb RAM. So no need to add more than a single 32mb EDO stick Nah brah, the 475s/605s can go up to 136 (128MB with 8 on-board). I've heard of some going to 256+ with a SIMM-doubler of some sort. | |
| Posted by: Brooklyn on 2024-06-24 22:57:40 Interesting. I’ve put a 64mb simm in mine but still only reports at 36mb. How do you unlock higher capacity? | |
| Posted by: Mustermann on 2024-06-24 23:19:29 Are you able to tell more details about the SIMM you used? - Number of chips - Exact type of chips | |
| Posted by: pizzigri on 2024-06-24 23:29:50 probably a single sided, single bank simm. To get 128, I think you need two bank/double sided simm. | |
Posted by: Realitystorm on 2024-06-25 18:08:32Interesting. I’ve put a 64mb simm in mine but still only reports at 36mb. How do you unlock higher capacity?I know it is possible with the right setup. MicroMac use to sell a 128MB simm as an upgrade: https://www.micromac.com/products/bigsimms.html | |
| Posted by: Kamshaft on 2024-06-26 07:52:34 I've emailed the MicroMac folks, maybe i'll get an answer and/or a quote? LOL | |
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