Uploaded April 2022 | Updated September 2026, 2 hours ago
This black and white port of 'Space Quest III' from Sierra was released in 1989. By most account, a Macintosh Plus wasn't the best machine to run it due to the sluggishness of the gameplay, though officially, it was supported as indicated on the box.
The system requirements indicate all you need is 1 Mb RAM for the b&w version and 2 Mb RAM for the color one. A "MIDI" module is supported provided it is a Roland MT-32 or a CM-32L or a CM-64. This replaces the music and all sound effects. Otherwise, you can use the default Macintosh 4-tone synth (which still sounds good, but nothing like a Roland).
Presented here is the intro to the game. I've sped up 8x the loading of the game since nothing at all happens, except the MIDI message that shows up on the screen of my physical MT-32.
Gear used:
-Macintosh Plus (platinum) with 4Mb of RAM equipped with BlueSCSI and FloppyEMU
-A Roland MT-32
-a Pocket Mac MIDI adapter that link my Mac's modem port to my Roland MT-32's MIDI IN port.
The video signal comes straight from 4 wires from inside the Macintosh Plus, into a RGB2HDMI device that I self-assembled by using the info in this project: github.com/hoglet67/RGBtoHDMI
This black and white port of 'Space Quest III' from Sierra was released in 1989. By most account, a Macintosh Plus wasn't the best machine to run it due to the sluggishness of the gameplay, though officially, it was supported as indicated on the box.
The system requirements indicate all you need is 1 Mb RAM for the b&w version and 2 Mb RAM for the color one. A "MIDI" module is supported provided it is a Roland MT-32 or a CM-32L or a CM-64. This replaces the music and all sound effects. Otherwise, you can use the default Macintosh 4-tone synth (which still sounds good, but nothing like a Roland).
Presented here is the intro to the game. I've sped up 8x the loading of the game since nothing at all happens, except the MIDI message that shows up on the screen of my physical MT-32.
Gear used:
-Macintosh Plus (platinum) with 4Mb of RAM equipped with BlueSCSI and FloppyEMU
-A Roland MT-32
-a Pocket Mac MIDI adapter that link my Mac's modem port to my Roland MT-32's MIDI IN port.
The video signal comes straight from 4 wires from inside the Macintosh Plus, into a RGB2HDMI device that I self-assembled by using the info in this project: github.com/hoglet67/RGBtoHDMI




![RGBtoHDMI for my Mac SE/30, how to wire up
RGBtoHDMI github project: contains gerbers for pcb manufacturing as well as important link to wiki guide: https://github.com/hoglet67/RGBtoHDMI
Tinker Different forum thread that I made on the RGBtoHDMI used for vintage compact macs: https://tinkerdifferent.com/threads/my-little-guide-on-rgbtohdmi-installed-on-classic-plus-etc.2475/
Gruz (creator of the game Flappy Mac) youtube channel: https://www.youtube.com/@insanelygruz
Joes Computer Museum (store includes some of Ron McAdams adapters for RGBtoHDMI) https://jcm-1.com/
Rons Computer Videos (Ron McAdams) youtube channel: https://www.youtube.com/@RonsCompVids
Games featured in the video capture examples:
Flappy Mac
Megaroids ][
Beyond Dark Castle
Oregon Trail CD version
Mac Plus connector on logic board (leading to J4 on the analog as seen on page 10 of this: https://vintageapple.org/gamba2/images/plus_analog.PDF)
Adrians Digital Basement video on the RGBtoHDMI being installed on his Mac Classic which inspired me to complete this setup on my gear as well:
https://www.youtube.com/watch?v=pvjsXbz1xlk
Texelec purchase page for an already assembled RGBtoHDMI 6bit TTL: https://texelec.com/product/rgbtohdmi-ttl/
Quick link to my full Mac Classic 1 RGBtoHDMI configurations (on the device): https://tinkerdifferent.com/threads/my-little-guide-on-rgbtohdmi-installed-on-classic-plus-etc.2475/#post-24640
Quick link to my full Mac Plus RGBtoHDMI configurations (on the device): https://tinkerdifferent.com/threads/my-little-guide-on-rgbtohdmi-installed-on-classic-plus-etc.2475/#post-24641
Quick link to my SE/30 RGBtoHDMI configurations (on the device): https://tinkerdifferent.com/threads/my-little-guide-on-rgbtohdmi-installed-on-classic-plus-etc.2475/page-2#post-25236 RGBtoHDMI for my Mac SE/30, how to wire up](https://i.ytimg.com/vi/QEtKlfmjZ3o/mqdefault.jpg)





