Viewing Issue Advanced Details Jump to Notes ] msx.cpp
ID Category [?] Severity [?] Reproducibility Date Submitted Last Update
05623 Graphics Major Always Jul 6, 2014, 14:00 Sep 21, 2015, 22:46
Tester Dr.Venom View Status Public Platform MESS (Official Binary)
Assigned To wilbert Resolution Fixed OS Windows Vista/7/8 (64-bit)
Status [?] Resolved   Driver msx.cpp
Version 0.153 Fixed in Version 0.166 Build 64-bit
Summary MESS-specific 05623: MSX2 and MSX2+: Top and bottom screenborders are wrong for both PAL and NTSC
Description Top and bottom screenborders don't set proper sizes differentiating for PAL, NTSC and its combination with 192 and 212 line modes.

The wrong borders also affect games that use the borders for effects. For example the border strobe light in KingsValley II upon completing a tomb is less pronounced than a real machine because of too small borders.
Steps To Reproduce Look in the code msx.c and v9938.c and compare to parameters in Yamaha v9938 technical data book (see page 146 and 147 of the book).
Additional Information Correct borders can be found in the table below (values taken from V9938 technical data book page 146, 147.

 * PAL NTSC
 * 192(LN=0) 212(LN=1) 192(LN=0) 212(LN=1)
 * ------------------- --------------------
 * 1. Top erase (top blanking) 13 13 13 13
 * 2. Top border 53 43 26 16
 * 3. Active display 192 212 192 212
 * 4. Bottom border 43 33 25 15
 * 5. Bottom erase (bottom blanking) 9 9 3 3
 * 6. Vertical sync (bottom blanking) 3 3 3 3
 * 7. Total 313 313 262 262
 *
 * Refresh rate 50.158974 59.922743
 *
 * NB. Total visible area (2+3+4) 288 288 243 243
Flags Verified with Original, Verified with Code
Regression Version
Affected Sets / Systems MSX2 and MSX2+
Attached Files
 


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