[TUHS] The MGR window system and the Macintosh

Grant Taylor via TUHS tuhs at tuhs.org
Fri Aug 5 09:09:32 AEST 2022

On 8/4/22 4:07 PM, Bakul Shah wrote:
> From its wikipedia entry:
> The initial Macintosh port was done on a Macintosh Plus computer 
> using the Lightspeed C compiler. It was a hybrid port in that many 
> of the low-level operations were passed on to QuickDraw instead of 
> using the internal bitmap code. The application did not conform to 
> the Macintosh user interface guidelines as it took over the entire 
> screen. The initial version used either available serial port as the 
> communications channel. A later update of the port could use either 
> ethernet or serial communications.

The idea of something doing graphics over a serial port is intriguing to 
me.  Eliding some form of IP over a dial up connection.

The closest thing that comes to mind is Sixel or ReGIS graphics.

> [No reference to how this was obtained]
> MGR reference manual (from Stephen A. Uhler's home page):
> https://sau.homeip.net/papers/mgrman.pdf
> Architecture and Design of the MGR Window System:
> https://sau.homeip.net/papers/arch.pdf
> Here it says a port to Macintosh-Plus was done in two weeks.


Grant. . . .
unix || die

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 4017 bytes
Desc: S/MIME Cryptographic Signature
URL: <http://minnie.tuhs.org/pipermail/tuhs/attachments/20220804/e529ca36/attachment.p7s>

More information about the TUHS mailing list