I purchased a Macintosh Centris 610. Why? No idea. I just fancied it. It seemed like a lot of computer for £35. Especially when an Amiga or Atari from the same era is much more expensive. This is what I got for my £35. - Apple Macintosh 610 Centris - Motorola 68040LC CPU clocked at 20Mhz - 4Mb RAM (Basically the onboard RAM) - 512kB of Video RAM (Onboard VRAM) - SCSI HDD with onboard controller - FDD 1.44Mb (or as I call it, God foresaken Apple FDD) - System 7.1 OS - No CDROM (it was only an option back in the day) - Ethernet adapter. Original Price $1,860 for reference a Atari Mega STe was $1,799
The Mac was relatively easy to upgrade. Adding an additional 512kB of VRAM and 64Mb of System RAM was as easy as ordering it off the web and slotting it in. It just worked. One thing of note, is the Mac is very modular. It opens up and slots appart and back together very easily. It is remarkably well built. Undoing two screws is all that is required and things like the HDD, FDD, Power Supply slot securely in and out. It’s a very elegant design.
What I added: Adding a video adapter dongle is an essential, unless you have a compatible Mac monitor kicking around. I upgraded the Motorola 68LC040 processor to a 68040 Motorola. Which includes an FPU. Again, I just looked around the internet, found a CPU and when it arrived just slotted it in. No drama at all. I added a SCSI2SD adapter to swap out the old and noisy Quantum HDD that came with it. The Mac was quite finicky about this, eventually I learnt it was necessary to kid the Mac by changing the Vendor ID and the model in the SCSI2SD firmware. It then sprung into life. Vendor ID = “ SEAGATE” Product ID = “ ST225N” o …and yes, the ‘spaces’ above are required. o https://68kmla.org/forums/index.php?/topic/27215-fitting-a-scsi2sd-in-a- 68k-mac/
Thanks to Big Mess of Wires, I can stop wrestling Satan. http://www.bigmessowires.com/floppy-emu/
Floppy Disk. As usual floppy disks on this old system was tantamount to naked mud wrestling with Satan. To add insult to injury and after a week of infuriating internet research, it transpired the FDD in my 610 wasn’t the original. It was a good deal older than the system and due to this only supported obscure and ancient Apple Mac Floppy Disk formats. I initially replaced it with a correct FDD but then Windows 10 started playing silly buggers with floppy disks so I purchased a SD-to-floppy emulator for the Mac and didn’t look back.
CDROM For reasons I won’t go into, I had an Apple CD300 external CDROM kicking about. Try as I might, it wouldn’t work on a System 7.1 machine and due to, at that time, the Apples FDD not playing ball, I once again wresteled to upgraded the OS from 7.1 to 7.3. When I finally did, the CDROM sprung into life. To get files onto the Mac I used a tool called MacImage which allows you to create ISO images by adding files and then burning the ISO image to CDROM using Alcohol 120% on PC
1990’s Computers Old Computers