Viewing Issue Advanced Details Jump to Notes ] mz700.cpp
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
06469 Documentation Feature Have not tried Jan 6, 2017, 19:09 Feb 13, 2017, 16:28
Tester demotester View Status Public Platform MESS (Official Binary)
Assigned To Resolution Open OS
Status [?] Acknowledged   Driver mz700.cpp
Version 0.181 Fixed in Version Build Normal
Summary MESS-specific 06469: mz700, mz800, mz1500: Difference between MZ-1500 and MZ-800 !
Description Ad 1)
A quote from youkan (Japan) about the misconception among MZ-1500 and MZ-800 system:
http://www.old-computers.com/museum/forum.asp?c=208&st=1

 "It is misunderstanding that MZ-800 and MZ-1500 are almost identical. MZ-1500 is not just a Japanese version of MZ-800. They are both based on MZ-700 architecture but differently extended. MZ-1500 does not have 640x200/320x200 bitmap screen but has 8-color PCG screen (1024 PCGs consist 320x200 screen). MZ-1500 has two SN76489 while MZ-800 has one. Etc. You would easily understand it if you look at the motherboard of them."

Ad 2)
Very detail description of difference between Jpn. MZ-1500 and MZ-800 versions:
http://www.8bity.cz/2016/japonsky-sharp-mz-1500-a-rozdily-proti-sharp-mz-700-a-mz-800/ (pls. use translation from the site link)

Ad 3)
Scheme of MZ-1500 - IO_198409 on p.337 - https://archive.org/details/Io19849
Scheme of MZ-1500(QD) - IO_198410 on p.345 - https://archive.org/details/Io198410
Steps To Reproduce
Additional Information Currently the "mz800_cass" sw-list is attached to mz1500 driver instead of mz1500 sw-list, and according to above this is wrong !
Both MZ-1500 and MZ-800 are compatible with MZ-700 sw-list, but are not compatible between itself !
So, the "mz700_cass" list could be attached to both mz1500 and mz800 drivers as they are compatible with it !
Flags
Regression Version
Affected Sets / Systems mz700, mz800, mz1500
Attached Files
 


-  Notes
User avatar
No.13620
demotester
(Tester)
Feb 13, 2017, 16:28
edited on: Feb 13, 2017, 16:40
Ad4)
https://ja.wikipedia.org/wiki/MZ-1500 -- Overview: "The MZ-1500 is a successor that has enhanced functions such as graphics, sound, etc, following the basic design and specifications of the MZ-700.
https://ja.wikipedia.org/wiki/MZ-800 -- Overview: "As a successor to the MZ-700 in the European market, it is different from the successor MZ-1500 in the Japanese market which was strengthened focusing on hobby applications, in that it is strengthened to withstand practical use in business as well as hobby use."

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So, the MZ-800 is not the European version of the MZ-1500 nor the MZ-1500 is the Jpn. version of the MZ-800 (as it is mention in the driver) !
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