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If it were my board, I would remove both of those. Then, clean the area well to spot any broken traces. Then replace them with new parts. If you are going to go to the trouble of removing the old ones, you might as well replace them with fresh parts.

Yes! Absolutely. What worries me about your photo is that I'm not seeing any on-screen images from ROM. No cursor, disk, or desktop pattern. So, although I believe the video output circuit needs work, I suspect there is another problem as well. That should not dissuade you -- as your board...

Hello! Is that a 'before' picture? The capacitors don't look replaced. For example, C3, C4, C5, and C6 look original. If you haven't already, replace all the capacitors, then clean all corroded areas with isopropyl alcohol and a toothbrush. (And then an ultrasonic cleaner if you have one.)...

That surprises me, because BinHex's text encoding inflates a file by 1/3. Ahh, MacBinary does not have compression, but BinHex has run-length encoding. So, depending on the file, BinHex could larger or smaller than MacBinary.

Almost. You just need to put a null modem adapter between the two cables. Because you are a 128K fan:

Because there is not a serial port on our tiny little friend, I thought I would try a hack. From Adafruit, I ordered three parts ($20 total) that emulate a keyboard from text typed on another computer: CH9328 keyboard emulator: https://www.adafruit.com/product/5973 Logic-level USB-to-serial...

I agree. For bulk transfers, your approach and ZuluSCSI sneakernet are faster and more convenient. I just saw the enormous write-up you did for networking old Macs. Bravo!

Yes, you can do that. But, better still, run Tiny Transfer on the vintage Mac and run Tiny Transfer in Basilisk II on the modern Mac.

I agree. Despite the increase in size, BinHex 4 has stood the test of time! I was not aware of this. I'll download it and take a look. - David

It's funny how the mind works. I think I was just too lazy to test my password cracking code, and my brain said "That's too much work -- here's the password."

I was unaware of this effort. Fantastic!

Back in 1992, I borrowed a DDS tape drive from my day job to back up all of my Macintosh hard drives at home. I stored the tape in a safe deposit box, until years later when it was relegated to the bottom of a storage box in the basement. Upon reviving my interest in Macs about five years ago, I...

Attached are PDF copies of the Apple suggested retail and developer discount prices for Apple II, Macintosh, AUX, Monitor, and Printer products circa 1991-1992. I was a developer at the time and I just recovered these documents from a tape backup. Example: M5510LL/B Macintosh IIfx 4MB 1FD CPU...

What about ADB instead? Solder to the internal pads. Include a temperature monitor, fan controller, and brightness control. Edit: Additionally, this would work on any ADB Mac. And, other kits can be added to the ADB chain.

Lol. After I released Tiny Transfer, someone on the forum said "Hey! Did you know the serial ports can go faster?" So, I had that itch in the back of my mind. When I bought and upgraded the CSI Hurdler card, I knew I was going to have to code in the extra serial ports, but I then recalled the...

Ahh. That is much more practical. I did not previously notice the line "This member can be an actual baud rate value"

Welp, there's the problem. They are using 256000 baud because there doesn't seem to be a predefined CBR value for 230400 baud. I can't locate an answer online for generating the correct baud rate. And another problem that I noticed, 14400 is missing. This is an easy fix.

I broke out the oscilloscope to determine if something is wrong with Basilisk II. I believe there is. First, here is a Quadra 840av transmitting at 230400. The RS-422 voltage only swings from 4.4V to -4.5V. That's within Apple's specs. The width of two bits measures 8.760 microseconds. (It was...

I purchased one of @Ron's Computer Videos boards at VCFMW 20 from Joe's Computer Museum, inside one of Joe's 3D printed cases. It is really cute. Here are my notes: 1. I had to enlarge the hole in the 3D case for the mouse input. A lot of these 'on-the-go' cables have fat connectors. 2. One...

I recently acquired a CSI Hurdler II NuBus card that adds serial ports to the Macintosh. Using the card and upgrading it sent me down a rabbit hole. When I received it, the CSI Hurdler indicated that it was a "dual" (HDS) serial port card, although it had all four ports soldered in place, along...