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CRTC

98 bytes added, 14 May
/* HSYNC and VSYNC */
CRTCs 1 and 2 have a fixed VSYNC width value of 16. VSYNC width can be configured with Register 3 on CRTCs 0, 3 and 4.
 
The bit 0 of port B of the PPI changes to 1 as soon as the VSYNC signal is produced by the CRTC.
== The 6845 Registers ==
Phi2x
9,004
edits