Viewing Issue Advanced Details
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
06337 DIP/Input Minor Always Jul 29, 2016, 18:31 Mar 15, 2017, 09:32
Tester demotester View Status Public Platform MESS (Unofficial Binary)
Assigned To Resolution Fixed OS
Status [?] Resolved Driver mz2500.cpp
Version 0.176 Fixed in Version 0.184 Build Normal
Summary MESS-specific 06337: mz2500: The HELP key is missing
Description According to -> (click on Images: Keyboard / Controller1, Size: Native)
the HELP key on the MZ-2500 is placed on a PC keyboard at F11 key !!!

Steps To Reproduce According to Jpn. wiki ( ) the basic disk contains 2 versions of basics: BASIC M25 (MZ-6Z002) and BASIC S25 (MZ-6Z003).
By holding down the HELP key during the floppy disk booting, it could be selected one of the basic versions.
Unfortunately it is not possible to select from the current mess mz2500 driver as the HELP key seems not emulated.
(also, this could serve as a test does the HELP key is working)
Additional Information
Regression Version
Affected Sets / Systems mz2500
Attached Files
png file icon mz2500_keyboard.png (210,600 bytes) Jul 30, 2016, 19:05 Uploaded by Tafoid
mz2500 keyboard image
png file icon mz2500_keyboard_matrix.png (347,709 bytes) Feb 8, 2017, 11:21 Uploaded by demotester
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User avatar
Aug 19, 2016, 12:30
MZ-2500 - IO_198512 -
On the page 335 can be found keyboard matrix of MZ-2500!
User avatar
Feb 8, 2017, 11:23
The mz-2500 Keyboard Matrix picture is attached!

It is needed to compare the mz2500 driver keyboard with the above keyboard matrix picture and correct mistakes.
User avatar
Mar 15, 2017, 08:50
Fixed in
User avatar
Mar 15, 2017, 09:32
Thanks, I will assign it to you in the whatsnew for 0.184.