Changes

Jump to: navigation, search

CRTC

146 bytes added, 2 July
/* Datasheets */
2 interlace modes are available:
* In interlace sync mode, the same information is painted in both fields to enhance readability. In this mode, reprogramming the CRTC is not necessary* In interlace sync and video mode, alternating lines are displayed in the even and odd field to double the resolution
[[File:CRTC Interlace modes.png]]
* In interlace sync mode, the same information is painted in both fields to enhance readability
* In interlace sync and video mode, alternating lines are displayed in the even and odd field to double the resolution
=== UM6845R and R31 ===
* [[Media:hd6845.hitachi.pdf|HD6845S (Hitachi)]] aka Type 0
* [[Media:UM6845-UMC.pdf|UM6845 (UMC)]] aka Type 0
* [[Media:Um6845r.umc.pdf|UM6845R (UMC)]] aka Type 1. In this document, the figure 7 describing the "Interlace Sync and Video" mode is incorrect
* [[Media:Mc6845.motorola.pdf|MC6845 (Motorola)]] aka Type 2 [[Media:Mc6845.pdf|Other datasheet version]]
* [[Media:CPC_Plus_Asic_Schematic.GIF|AMS40489 (Amstrad)]] aka Type 3
5,908
edits