New firmware release (v1.8.0) available on GitHub

87 views
Skip to first unread message

TheHighNibble

unread,
Aug 6, 2021, 12:47:04 AM8/6/21
to IMSAI 8080esp
August 2021 Release

This is a minor release that:
  • flushes the printer cache file to disk periodically to allow access when the printer is not busy
  • responds to the IMSAI PTR-300 printer initialisation command to reset the printer
  • adds 132 column paper options to the printer, LPT: device on the web UI
  • performs a printer initialisation command to reset the printer when Reset pressed in LPT: device on the web UI
  • adds support for a hardware parallel printer interface for LPT:
  • adds support for a printer initialisation string for a hardware printer connected to the parallel port
See the release notes for more details.

udo....@freenet.de

unread,
Aug 6, 2021, 3:26:36 AM8/6/21
to IMSAI 8080esp
I successfully updated my machine, but the web frontend still shows version 1.7.0 ?
Must be the new version tho, if I cycle through the printer paper formats it now also
has a 132 characters/line mode.
And now also my old printer buffer is empty when I restart the machine :-)

udo....@freenet.de

unread,
Aug 6, 2021, 3:42:29 AM8/6/21
to IMSAI 8080esp
The version of web frontend now also shows 1.8.0, had to clean browser cache.

TheHighNibble

unread,
Aug 6, 2021, 4:31:06 AM8/6/21
to IMSAI 8080esp
How do you like the 132 column mode? It is a personal favourite feature.
But I also like the hardware parallel port, and will publish the schematic and a PCB design shortly. It only requires a 74HC595, 74HC00, 2x100nF caps, a 10K resistor and a schottky diode for voltage protection.

udo....@freenet.de

unread,
Aug 6, 2021, 6:33:24 AM8/6/21
to IMSAI 8080esp
This is very good, assembler listings often are 132 characters wide and now are better readable.
I have no physical printer anymore, but the virtual one is great, I can save my printings as a PDF.

Reply all
Reply to author
Forward
0 new messages