This is the Macintosh SE that we had as a family computer since it was new in 1987. As a youth, I absolutely loved this machine but I always was bothered by how slow it was, especially after upgrading it to System 7. Today, I'm going to fix that be trying to install a mysterious vintage accelerator into it to see how much of a boost it can really get.

0:00 Intro
1:24 A little background on the Macintosh SE
7:36 Radius SE Accelerator
9:28 Radius Two Page Display card for the SE Accelerator
11:19 Orion by MacPEAK Systems
17:41 Testing untested Mac SE motherboard
22:56 Testing the Orion accelerator
24:16 Testing the Radius SE Accelerator
25:02 Troubleshooting issues with the Orion accelerator
26:36 Orion accelerator memory size jumper testing
30:15 Replacing Mac SE ROMs using EPROMS
36:04 Face off! Macintosh Classic vs the accelerator Mac SE
39:43 Sound issues with the accelerator
50:40 Conclusion

--- Video Links

Thread trying to identify the MacPeek Orion accelerator:
https://68kmla.org/bb/index.php?threa...

Macintosh ROM collection:
https://www.macintoshrepository.org/7...

Vintage Macintosh accelerator drivers:
https://vintageapple.org/macdrivers/

Spreadsheet showing Mask ROM to EPROM wiring:
https://docs.google.com/spreadsheets/...

Adrian's Digital Basement ][ (Second Channel)
   / @adriansdigitalbasement2  

Support the channel on Patreon:
  / adriansdigitalbasement  

-- Tools

Deoxit D5:
https://amzn.to/2VvOKy1
http://store.caig.com/s.nl/it.A/id.16...

O-Ring Pick Set: (I use these to lift chips off boards)
https://amzn.to/3a9x54J

Elenco Electronics LP-560 Logic Probe:
https://amzn.to/2VrT5lW

Hakko FR301 Desoldering Iron:
https://amzn.to/2ye6xC0

Rigol DS1054Z Four Channel Oscilloscope:
https://www.rigolna.com/products/digi...

Head Worn Magnifying Goggles / Dual Lens Flip-In Head Magnifier:
https://amzn.to/3adRbuy

TL866II Plus Chip Tester and EPROM programmer: (The MiniPro)
https://amzn.to/2wG4tlP
https://www.aliexpress.com/item/33000...

TS100 Soldering Iron:
https://amzn.to/2K36dJ5
https://www.ebay.com/itm/TS100-65W-MI...

EEVBlog 121GW Multimeter:
https://www.eevblog.com/product/121gw/

DSLogic Basic Logic Analyzer:
https://amzn.to/2RDSDQw
https://www.ebay.com/itm/USB-Logic-DS...

Magnetic Screw Holder:
https://amzn.to/3b8LOhG
https://www.harborfreight.com/4-inch-...

Universal ZIP sockets: (clones, used on my ZIF-64 test machine)
https://www.ebay.com/itm/14-16-18-20-...

RetroTink 2X Upconverter: (to hook up something like a C64 to HDMI)
http://www.retrotink.com/

Plato (Clone) Side Cutters: (order five)
https://www.ebay.com/itm/1-2-5-10PCS-...

Heat Sinks:
https://www.aliexpress.com/item/32537...

Little squeezy bottles: (available elsewhere too)
https://amzn.to/3b8LOOI

--- Links

My GitHub repository:
https://github.com/misterblack1?tab=r...

Commodore Computer Club / Vancouver, WA – Portland, OR – PDX Commodore Users Group
https://www.commodorecomputerclub.com/

--- Instructional videos

My video on damage-free chip removal:
   • How to remove chips without damaging ...  

--- Music

Intro music and other tracks by:
Nathan Divino
@itsnathandivino