November 2008 Archives

Running With ADTPro


A while back I mentioned my desire to get ADTPro running and transfer some disk images back and forth from my Apple II/III machines. I’d planned on ordering a serial cable for the IIc and IIgs to that end.

While I did actually order that cable, at some point after its arrival I shuffled it into the chaos that is my apartment - once I finally decided to try it out with the Apple III CP/M diskette it was nowhere to be found. Fortunately, neither the Apple IIe or III+ require the problematic DIN-5 serial connector, so I was able to bootstrap ADTPro using a standard 25-pin serial cable, leaving the IIc and IIgs out of the fun for now.

I ran the server software on my MacBook Air using a USB to serial converter. The bootstrap process was performed on the IIe by first booting ProDOS, selecting the Super Serial Card via “IN#1” (slot 1), and sending a command string which echos serial input to the console (first hitting CRTL-I then entering “14B” at the SSC prompt). At this point, the client software is streamed in and executed. Once the client is up and running on the Apple II, you simply write out a client boot diskette so you won’t need to go through the bootstrap process again (unless you’re entertaining guests or something). As a bonus, the ADTPro client diskette is also bootable on the Apple III which saves some work.


After creating the client boot diskette, I transferred an image of the Apple III CP/M diskette to the MacBook Air and uploaded a copy to the Asimov FTP archive. I’ve also mirrored a copy locally on FTP just in case.

IRIX Blender 2.48a

| No Comments

Just a quick note that tbcpp has put together an IRIX build of the latest and greatest Blender, version 2.48a. I gave it a quick spin myself and it’s working great (screenshot below).


This build isn’t currently available on the official Blender site, but a download link can be found in this discussion thread.

Tandy CoCo 3

| 1 Comment

Last week I once again braved the streets of San Francisco to pick up an interesting bit of retrocomputing hardware - a Tandy Color Computer (CoCo) 3 for $20.

The lot came complete with a CoCo 3 console internally upgraded to 512K, a CRC Computers Inc. Disto Mini Controller 1 floppy interface, an external drive box with a 5.25” diskette drive, joystick, Metric Industries Model 104 serial/parallel interface, several ROM cartridges, diskettes and books.


I’ve never owned a CoCo personally, but I did have a lot of fun playing around with my uncle’s CoCo 2 system back in the eighties. Booting the machine evoked fond memories of keying in programs out of computer magazines and saving them on cassette, which is something I actually enjoyed doing back in the day.

However, I’d never actually used a CoCo with a floppy subsystem before and had to do a bit of Googling to unearth a few needed commands. I became a bit confounded at first, as none of the disk based commands I tried actually seemed to work.

I soon discovered that the switch on the Disto controller toggles between two different BASIC versions, and was initially set to standard Extended Color BASIC. Once the switch was in the correct position, Disk Extended Color BASIC became active and the commands I’d located online actually worked.


My attempts to boot Flight Simulator II still met with failure. Unlike some retro systems, the CoCo 3 does not perform a disk seek (autoboot) on power up - even with Disk BASIC active. So how to boot a piece of commercial software without a standard directory structure (the ‘DIR’ command returned gobbledygook)? Back to Google again, and this time came across a YouTube video of a chap booting up Flight Simulator II on a CoCo 3 emulator (linked below). Thankfully, he’d recorded the entire boot process, including the magic boot command - “DOS”. Once this arcane word of power was entered the drive sprang to life, booted OS-9 and finally Flight Simulator II.

I haven’t done much more with the machine just yet though I did boot up the original Flight Simulator I diskette just to see the difference. One thing I’d like to mess around with a bit is OS-9/NitrOS-9 itself. I actually owned an OS-9 based MM/1 tower about a decade ago, but at the time was less into the retro scene and wound up passing it on without really diving into it. The CoCo is quite interesting in that it’s default OS is a real-time, process-based, multitasking, multi-user, Unix-like operating system.

About this Archive

This page is an archive of entries from November 2008 listed from newest to oldest.

October 2008 is the previous archive.

January 2009 is the next archive.

Find recent content on the main index or look in the archives to find all content.