| Reg | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 0 | HT7 | HT6 | HT5 | HT4 | HT3 | HT2 | HT1 | HT0 | Horizontal Text |
| 1 | HD7 | HD6 | HD5 | HD4 | HD3 | HD2 | HD1 | HD0 | Horizontal Displayed |
| 2 | HP7 | HP6 | HP5 | HP4 | HP3 | HP2 | HP1 | HP0 | Horizontal Sync Position |
| 3 | VW3 | VW2 | VW1 | VW0 | HW3 | HW2 | HW1 | HW0 | Vert/Horz Sync Width |
| 4 | VT7 | VT6 | VT5 | VT4 | VT3 | VT2 | VT1 | VT0 | Vertical Total |
| 5 | -- | -- | -- | VA4 | VA3 | VA2 | VA1 | VA0 | Vertical Total Adjust |
| 6 | VD7 | VD6 | VD5 | VD4 | VD3 | VD2 | VD1 | VD0 | Vertical Displayed |
| 7 | VP7 | VP6 | VP5 | VP4 | VP3 | VP2 | VP1 | VP0 | Vertical Sync Position |
| 8 | -- | -- | -- | -- | -- | -- | IM1 | IM0 | Interlace Mode |
| 9 | -- | -- | -- | CTV4 | CTV3 | CTV2 | CTV1 | CTV0 | Character Total Vertical |
| 10 | -- | CM1 | CM0 | CS4 | CS3 | CS2 | CS1 | CS0 | Cursor Mode, Start Scan |
| 11 | -- | -- | -- | CE4 | CE3 | CE2 | CE1 | CE0 | Cursor End Scan Line |
| 12 | DS15 | DS14 | DS13 | DS12 | DS11 | DS10 | DS9 | DS8 | Display Start Address hi |
| 13 | DS7 | DS6 | DS5 | DS4 | DS3 | DS2 | DS1 | DS0 | Display Start Address lo |
| 14 | CP15 | CP14 | CP13 | CP12 | CP11 | CP10 | CP9 | CP8 | Cursor Position hi |
| 15 | CP7 | CP6 | CP5 | CP4 | CP3 | CP2 | CP1 | CP0 | Cursor Position lo |
| 16 | LPV7 | LPV6 | LPV5 | LPV4 | LPV3 | LPV2 | LPV1 | LPV0 | Light Pen Vertical |
| 17 | LPH7 | LPH6 | LPH5 | LPH4 | LPH3 | LPH2 | LPH1 | LPH0 | Light Pen Horizontal |
| 18 | UA15 | UA14 | UA13 | UA12 | UA11 | UA10 | UA9 | UA8 | Update Address hi |
| 19 | UA7 | UA6 | UA5 | UA4 | UA3 | UA2 | UA1 | UA0 | Update Address lo |
| 20 | AA15 | AA14 | AA13 | AA12 | AA11 | AA10 | AA9 | AA8 | Attribute Start Adr hi |
| 21 | AA7 | AA6 | AA5 | AA4 | AA3 | AA2 | AA1 | AA0 | Attribute Start Adr lo |
| 22 | CTH3 | CTH2 | CTH1 | CTH0 | CDH3 | CDH2 | CDH1 | CDH0 | Character Tot(h), Dsp(v) |
| 23 | -- | -- | -- | CDV4 | CDV3 | CDV2 | CDV1 | CDV4 | Character Dsv(v) |
| 24 | COPY | RVS | CBRATE | VSS4 | VSS3 | VSS2 | VSS1 | VSS0 | Vertical smooth scroll |
| 25 | TEXT | ATR | SEMI | DBL | HSS3 | HSS2 | HSS1 | HSS0 | Horizontal smooth scroll |
| 26 | FG3 | FG2 | FG1 | FG0 | BG3 | BG2 | BG1 | BG0 | Foregnd/Bgnd Color |
| 27 | AI7 | AI6 | AI5 | AI4 | AI3 | AI2 | AI1 | AI0 | Address Increment / Row |
| 28 | CB15 | CB14 | CB13 | RAM | -- | -- | -- | -- | Character Base Address |
| 29 | -- | -- | -- | UL4 | UL3 | UL2 | UL1 | UL0 | Underline scan line |
| 30 | WC7 | WC6 | WC5 | WC4 | WC3 | WC2 | WC1 | WC0 | Word Count |
| 31 | DA7 | DA6 | DA5 | DA4 | DA3 | DA2 | DA1 | DA0 | Data |
| 32 | BA15 | BA14 | BA13 | BA12 | BA11 | BA10 | BA9 | BA8 | Block Start Address hi |
| 33 | BA7 | BA6 | BA5 | BA4 | BA3 | BA2 | BA1 | BA0 | Block Start Address lo |
| 34 | DEB7 | DEB6 | DEB5 | DEB4 | DEB3 | DEB2 | DEB1 | DEB0 | Display Enable Begin |
| 35 | DEE7 | DEE6 | DEE5 | DEE4 | DEE3 | DEE2 | DEE1 | DEE0 | Display Enable End |
| 36 | -- | -- | -- | -- | DRR3 | DRR2 | DRR1 | DRR0 | DRAM Refresh rate |