Changes
CRTC
,/* The Internal registers of the 6845 are */
|''Register Index''||''Register Name''||''Range''||''CPC Setting''||''Notes''
|-
|0||Horizontal Total||00000000||6463
|-
|1||Horizontal Displayed||00000000||40
|-
|2||Horizontal Sync Position||00000000||46
|-
|3||Horizontal and Vertical Sync Widths||xxxxx000||
|-
|4||Vertical Total||x0000000||38
|-
|5||Vertical Total Adjust||xxx00000||0
|-
|6||Vertical Displayed||x0000000||25
|-
|7||Vertical Sync position||x0000000||30
|-
|8||Interlace and Skew||xxxxxx00||0||00: No interlace; 01: Interlace Sync Raster Scan Mode; 10: No Interlace; 11: Interlace Sync and Video Raster Scan Mode
|11||Cursor End Raster||xxx00000||0||Sets last raster row of character that cursor is on to invert
|-
|12||Display Start Address (High)||xx000000||32
|-
|13||Display Start Address (Low)||00000000||0||Allows you to offset the start of screen memory, useful when using memory from address &0000.
|-
|14||Cursor Address (High)||xx000000||0
|-
|15||Cursor Address (High)||00000000||0
|-
|16||Light Pen Address (High)||xx000000||||Read Only
