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I'm hoping to pick up a 6100 motherboard from Paris in a couple of weeks, with 8MB of RAM (no-one needs more than 640K eh ;-) ?). There's no case or PSU. I plan (in my naïvety) to add a DIY ZuluSCSI PICO (or BlueSCSI, whichever is the orthodox one), but no FDD, CD (awww, but I do have a SCSI...

Hi folks, I'm now the briefly and surprisingly honoured owner of @CircuitBored 's eMac, an 800MHz G4 machine with 1GB of RAM, overclocked to 1.27GHz. This makes it, in theory, slightly slower than my Mac mini G4, except that, I believe the eMac has a spinning HDD instead of the mSATA drive the...

A 68000 CPU will generate an Address Exception if there's an attempt to read a word (or long) from an odd address. Was that feature ever used (apart from to trap errors)? I'm asking, because I believe that odd addresses were used on some Amiga software to implement dynamic libraries. If you load...

Let's imagine, for a moment, Apple had decided to go with the M88x00 RISC successors to 680x0 Macs instead of PowerPC. Gary Davidian had already created an emulator which worked on an LC and could boot Mac OS 7.x by 1991. So, in theory this could have meant an architectural shift, a full 2...

Hi folks, I'm late to the iMac G3/DV USB Booting party - having only this week discovered that it's possible! You can read about how I did it here: Tuesday at 10:09 AM @CC_333 seems to think it should be possible with all New World iMacs. It would also be worth checking if it works...

Does anyone have a summary of what's likely to have gone wrong with a PowerBook 5300 (apart from catching fire... only kidding). A friend on mine has a PB5300cs/117 and we hope to meet up in Feb. I'm assume the NiMH battery is either dead or charcoal* ;-). This reminds me, I'm thinking of...

I bought a PowerBook 1400c, 16MB RAM upgrade just before Christmas and it's arrived! The RAM expansion works - I now have 48MB of RAM! Wow, I could run Mac OS 9.1 super slowly! Unexpectedly it also came with a free CPU upgrade, a 166MHz unit. Looks very neat (LHS in images). Of course it...

I've written a full blog post about this, here, but here's a summary: I've been a big fan of the wonderfully simple Macintosh Pascal Programming Primer since I bought it in 1993. I've never written an awful lot of classic Macintosh apps: almost my entire career has been embedded computing in...

This MacGUI blog post covers the boot process for the early System Software on a Mac 512K (or Mac 128K). In part of it, he talks about the Mythical 256KB Mac: Disappointingly, as he also covers in this blog post, the 64K ROM only checks for the 128K or 512K Mac models FindMemSize: 4002DE...

OK, so I've had a glass of wine, but here's the dumb idea. The MacSE has a PDS slot (page 445-446 of the Guide To The Macintosh Family Hardware), which explicitly says it can be used for memory expansion. So, we decode another 3MB from $600000 to $8FFFFF and another 1MB from $C00000 to $CFFFFF...

First a recap: it's possible to use AirTalk to connect to miniVmac version 37 (beta) via a host system and magically it can see an AppleTalk connection on a physical classic Mac (i.e. one with a proper serial port, i.e. every Mac prior to the iMac G3/233). However, because of the coarse...

I thought I'd share my little journey of getting AirTalk to work between my Plus & miniVMac on my π5. OK, so firstly, yes I'm fortunate enough to have one of those, as-yet-rare 5's (4GB RAM, because hey - who needs more ;-) ) thanks to a leaving present from the most recent company I was working...

Amazingly I've only recently noticed this. My Platinum (I think) era Mac Plus's keyboard's key caps all seem to be the same colour apart from the space bar which is noticeably more beige/brown! I don't mind, but it's curious. Perhaps this was the very keyboard where they switched colour scheme...

Earlier this year I became interested in learning the basics of Morse code. I had a very simple concept for my Morse code tutor, it would simply convert a letter I typed in into Morse or convert dots and dashes typed in, into a single letter. And initially that was because I wanted to fit it on...

Hi folks, This is a weird issue. I have a PB1400c with a 750MB Partition allocated to System 7.5.3 (HFS) and about 6GB allocated to Mac OS 8.1 (HFS+). Earlier today I booted the PowerBook up into Mac OS 8.1, which was fine. Then, because I wanted to test a SCSI Apple 300i Plus CD ROM player, I...

Should there be a sub topic for emulation? I've recently found infinite Mac really handy for testing applications on other Mac OS's. The website has vastly improved over the past year and now supports every classic OS from System 1 to Mac OS 9.0.4 and multiple hosts: Mac 128K, 512Ke, Plus, SE...

Hi folks, after much effort, this ol' Mac mini G4 is Alive 'n' Kickin'! It means I now have a complete-enough bridging range of Macs where the G4 bridges the gap between the PowerBook 1400c (Mac OS 8.1) and the MacBook C2D/2.4GHz. And what a struggle it's been! This mini had always had a pretty...

My Mac SE originally had a second portrait, A4 page monitor. I had been used by the Eastern Daily Press (a Norwich, UK local newspaper) in the 1980s early 90s. It was always very weird to see the second monitor in action, because obviously it's fantastic to have a second monitor for such an...

I had had problems with installing Mac OS X on my iceBook G3/600. It kept crashing some way into rebooting. I thought it was the dodgy GPU (screen keeps glitching, though I guess it could be cable issue). So, I thought the 60GB HD was OK and figured I could put it in my Mac mini G4. After 1...

My PowerBook 1400's PRAM is dead and I should replace it, but in the meantime I have to keep typing in the date, except that even with Mac OS 8.1, I can't set a date after 2019. I came across bbraun's SetDate utility (which comes with source code & CW project), but it doesn't work with Mac OS...