Routines
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50226: Copy Area To Screen
Used by the routines at HandleExtraLife and DisplaySunMoonFrame.
Copies a block of the screen buffer, which is two bytes wide and eight lines high, to the display.
Input
B Pixel Y coordinate
C Pixel X coordinate
CopyAreaToScreen 50226 CALL CalculateScreenAddress Find the address in the display.
50229 CALL CalculateBufferAddress Find the address in the screen buffer.
50232 LD L,C Copy it to HL.
50233 LD H,B
50234 LD BC,2050 Set the number of lines to 8 and the number of bytes to 2.
50237 JP CopyBlockToScreen Copy the block to the display.
View the equivalent code in;
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