17 lines
1.1 KiB
Markdown
17 lines
1.1 KiB
Markdown
# mz25key
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A PS/2 to Sharp MZ-2500/MZ-2800 Interface
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The mz25key now uses the SharKey firmware. If the build configuration (menuconfig -> SharpKey Configuration -> Build target -> mz25key
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is set to an MZ2500 or MZ2800 then no changes are needed to hardware, just upload the firmware via the programmer port and once uploaded
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future updates can be made via OTA.
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A modification can be made to an mz25key to allow it to run SharpKey firmware without specific build target. This can be achieved with a
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100R resistor placed between pin14 (GPIO12) of the ESP32 and pin 8 of the host interface header J1. The advantage of this modification is it makes
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the mz25key compatible with the SharpKey and if you used a 9pin header on the host interface, you can swap cables around to target different
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hosts.
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Please see my website, https://eaw.app for more documentation and recent updates.
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The source code for the mz25key is identical to the SharpKey, just the build time configuration via the KConfig menu. The provided sdkconfig
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is setup so that the source code will build the mz25key.
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