Saturday, September 14, 2019

Amiga 1000 Resurrection Rebuild

Bought an Amiga 1000 (because I always wanted one) for relatively cheap on Ebay and it said 'It Runs'.

Yeah, right.

The power supply fan runs. Short story: no 12V output due to a bad 3122V.

No video or anything yet, 3122V on order.

Went ahead and replaced about half the electrolytics on the power supply with what I had.

All other voltages present and looked ok or close enough to work. IIRC -12V was 10.something.

Of course, it had really been parted out because the seller was an idiot.

Missing floppy, missing floppy cable, missing floppy mount...smelled a bit like cigarette smoke.


Power supply repair completed with 3122V. All voltages slightly above the rating so they should be good under load but I haven't checked yet.

It does boot to a white screen and I get the boot tones.

I modded a Panasonic JU-256A227P floppy drive according to the instructions I found for a JU-257A607P so we'll see on that.

Need a keyboard first to boot at all.

I accidentally lifted the trace above the pin so I just solder globbed the lifted trace to the pin. Really need some fine Kapton wire for this sort of stuff...below is the original instruction photo.

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Monday, August 26, 2019

How to Mute a Chrome Window / Tab

This is great if you have to do an online course or whatever with mandatory watch times.

If you don't want to listen to the audio but maybe just kinda watch it while you Netflix, it's easy.

I'm using Chrome on Mac OS X 10.13 (doesn't matter) build 76.0.3809.100.

Just right click the tab and select 'Mute Site'. 

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Monday, June 24, 2019

1988 C4 Corvette Rear Shock/Strut Replacement. I used Bilstein.

Good instructions. Better than Bilstein's. IIRC for 1988: top rear bracket torque 22 ft/lbs, knuckle 61 ft/lbs. Also for the old strut you can use a 1/4 in wrench to hold the strut from turning vs. vice grips.

Check your manual.

1988 Lugnuts 100ft lbs, again IIRC. 80 for the spare.

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Click the pic to buy the exact ones I got.

At the time of writing they were under $90 each. The rubber was all uprated and larger pieces. The old one didn't have a self locking nut. Nice upgrades.

Wednesday, May 22, 2019

FIX: Virtual Box and FreeDOS 1.2 ISO Invalid Opcode errors when booting for install

Here's what the FreeDOS page says to do:

"When you boot the FreeDOS install CDROM, when you get the get the first "Welcome to FreeDOS 1.2" boot menu, press Tab when you're on "Install to harddisk" and add 'raw' (without quotes) to the kernel command line, then press Enter to boot.

From this:
KERNEL /boot/syslinux/memdisk

To this:
KERNEL /boot/syslinux/memdisk raw"

So all this means is push tab, type 'raw' (without quotes) and press Enter. 

But the command line looks like this when it pops up:

Pretty much nothing like what the FreeDOS site says, unless you're a linux geek. 

Which is why people still hate Linux.

Note: you will have to hit 'tab' and enter 'raw' at the end every time the VM reboots during the install such as after it partitions your virtual disk.

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Connecting Apple IIgs to your Mac Pro for File Sharing

Specifically this is just to clarify some settings for the LocalTalk Bridge 2.1 Control Panel. It works for me.

As you can see, AppleTalk is set to use Ethernet per the notes at

But it didn't say what to set as far as the Public/Private setting for the control panel.

My home Ethernet is so it's private but since LocalTalk can't use TCP/IP on classic Macs and the IIgs (AFAIK) I think it just really means 'can anyone use the bridge', so it's set to yes.

Other specs:
Beige G3 running Mac OS 9.2.2 natively, Localtalk over phonenet with terminators (Farallon but none of that really matters), Apple IIgs on GSOS 6.0.4.

I can see both my VirtualBox shares and the shares of my G3 on my IIgs. G3 is in the middle as the bridge of course. It's a good middle of the road machine for Classic work in the modern world as it still has most of the ports, IDE interfaces, mine's got USB, it's got a floppy that can read and write at least 800K (although IIRC later OSes have issues with ProDOS). I usually just use HFS 800K if I have to.

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Saturday, May 11, 2019

Apple II GS/OS *WITHOUT* a Hard Drive! RAMDISK!

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I downloaded and made the 6.0.4 floppies, and then used Flashboot to install it to the RAMDISK. I have a 4MB Applied Engineering RAMDISK and even with a few add-ins over the basics, I have about 800K left.

Instructions can be clicked. They work. Some differences in verbiage vs. what the screen says, but pretty obvious. Comment if you have questions.

Thursday, April 25, 2019

Acer G73jh Windows 10 Notes

I sold this laptop but this post still might help. Turns out the motherboard supposedly had a hairline crack in it.

Windows 10 ATK Version.

Then do the regedit:


Set 90% max cpu in power plan seems to help
turn turbo off in bios

throttlestop 8.7 settings

Acer Nitro 5 BSOD Notes.

Update 22 May 2019: I think it's a bad RAM piece. IIRC in the last week I've only seen one driver restart 'black screen flash'. I also updated the Radeon software.

Frustrating that memtest didn't see any bad RAM. This is a long drawn out process.

I removed the OEM RAM stick and put an identical piece I'd purchased to expand the memory with in it's place. Seems WAY more stable.

Furmark ran without any artifacts noted for over 24 hrs off the Vega GPU. I wanted to use that since it uses system RAM which is the suspect.

Sloppy notes:

515-42 model, RX 560X and Ryzen 5.

Following instructions here.

I noted that Visual C++ had installed a 2015 and 2017 version on my laptop but the MS download page says 2015-2019 share the same distributable so I wonder if that was the issue.

After uninstalling and reinstalling those I ended up with 2005 version 4, 2012 x64/x86 and the 2017 x64/x86.

Links for 2005 and 2012 IIRC I had to google for.

Latest attempt: GPU scaling on.

It black screen flashes (Windows driver restart due to non responsiveness) too.

Furmark, Memtest, etc. have revealed no artifacts/memory issues yet. What's weird is it doesn't do it in games at higher temps so I'm hoping it's a windows GUI issue which is where it happens...usually just while using chrome...

BSOD changed from

Video TDR Failure (atikmpag.sys)

(IIRC) to a different issue after the instructions at and since then I turned on GPU scaling...

Friday, January 18, 2019

Screen Sharing Between Classic Mac and OS X

This is a work in progress, but I've found what I *THINK* is going to be about the best method:

Setup Sheepshaver on OS X, and install Timbuktu Pro on that virtual machine, and also on your real PowerMac hardware or what have you.

I was lucky to get a CD of Timbuktu and Manual on Ebay for $9!

Please don't pirate if you can avoid it, although in this case, actual copies can be expensive and the company doesn't sell it any more so it's tricky. :)

One thing that threw me for a second: I had 7.5.5 installed on Sheepshaver and the Timbuktu installer complained that I needed 7.5...just tell it the correct drive that 7.5.5 is on in the dropdown. :)

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Misc Notes:

VNC Server on Mac OS 9 doesn't work very well. Kinda gave up.
Netpresenz for FTPingon Mac OS 9 works ok but for some reason doesn't like .sea.bin files, I think it's trying to extract on the MAc for some reason but fails processing the .sea part. .smi.bin and other files work fine. these reasons are why I'm trying Timbuktu Pro.

More to come on this subject! Will update as it progresses.

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