A new software release (v1.5.1) patch level only.

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TheHighNibble

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Apr 4, 2020, 8:04:20 PM4/4/20
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April 2020 Release

(v1.5.1) is now available on GitHub.

This release is a patch level release that addresses only 1 issue

  • Fixes the bug identified when a halt/hlt instruction is executed, causing the HLTA LED to light in the Status Byte. The machine now responds to the RESET, EXT. CLR, RUN, STOP and PWR OFF toggle switches on the front panel and in the CPA: device on the desktop UI.

Thanks to Curt Mayer for identifying this bug via the forum https://groups.google.com/d/msg/imsai8080esp/dp5gq8kWRoI/6dD9WRuwAgAJ

Note:

You only need the imsaisim_esp32.bin file from the FIRMWARE bundle if upgrading from v1.5.0

If upgrading from an earlier release you will also need:

  • the cpm22b01.dsk files from the IMAGE bundle to enable features that need the new CP/M BIOS
  • and the update.bin file to update the desktop GUI.
See the release notes for further details.

Martin Reinhardt

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Apr 4, 2020, 8:27:03 PM4/4/20
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Thank you for the new firmware 1.5.1 upgrade. Perfect.

Lance Spencer

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Apr 4, 2020, 8:59:29 PM4/4/20
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Installed!  Thank you.

John Kennedy

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Apr 4, 2020, 9:00:45 PM4/4/20
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Installed here without a hitch.. all my tetrads are extra sexy now.

Udo Munk

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Apr 5, 2020, 8:31:17 AM4/5/20
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Updated to 1.5.1, HLT instruction is working correct now.

Ted Kekatos

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Apr 6, 2020, 9:05:39 PM4/6/20
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