The following table shows the memory locations for the CBM-500's VIC chip registers (bank 15):
| Hex | Dec | Description |
|---|---|---|
| $D800 | 55296 | Sprite 0 X position |
| $D801 | 55297 | Sprite 0 Y position |
| $D802 | 55298 | Sprite 1 X position |
| $D803 | 55299 | Sprite 1 Y position |
| $D804 | 55300 | Sprite 2 X position |
| $D805 | 55301 | Sprite 2 Y position |
| $D806 | 55302 | Sprite 3 X position |
| $D807 | 55303 | Sprite 3 Y position |
| $D808 | 55304 | Sprite 4 X position |
| $D809 | 55305 | Sprite 4 Y position |
| $D80A | 55306 | Sprite 5 X position |
| $D80B | 55307 | Sprite 5 Y position |
| $D80C | 55308 | Sprite 6 X position |
| $D80D | 55309 | Sprite 6 Y position |
| $D80E | 55310 | Sprite 7 X position |
| $D80F | 55311 | Sprite 7 Y position |
| $D810 | 55312 | Sprites 7-0 X position MSB |
| $D811 | 55313 |
Bit 7 Raster compare bit 8
Bit 6 1 = Extended colour bit on Bit 5 1 = Bit map mode on Bit 4 0 = Blank screen Bit 3 1 = 25 rows/0 = 24 rows Bit 2-0 Smooth scroll Y position |
| $D812 | 55314 | Read/Write raster bits 7-0 |
| $D813 | 55315 | Light pen latch X pos |
| $D814 | 55316 | Light pen latch Y pos |
| $D815 | 55317 | Sprite display enable (1=on) |
| $D816 | 55318 |
Bit 7-6 Unused
Bit 5 Set to zero (reset bit) Bit 4 1 = Multicolour mode on Bit 3 1 = 40 columns/0 = 38 cols Bit 2-0 Smooth scroll X position |
| $D817 | 55319 | Sprite expand vertical |
| $D818 | 55320 |
Bit 7-4 Address of text screen
Bit 3 (Hi-res) Address of hi-res (0 = uses lower 8K block) Bit 3-1 (Lo-res) Address of chr set (Bit 1 determines lower/graphics set) Bit 0 Not used |
| $D819 | 55321 | IRQ Register |
| $D81A | 55322 | IRQ Mask Register |
| $D81B | 55323 | Sprite to background priority (0 = Sprite in front) |
| $D81C | 55324 | Sprite multicolour (1 = on) |
| $D81D | 55325 | Sprite expand horizontally |
| $D81E | 55326 | Sprite collision detect |
| $D81F | 55327 | Sprite/background collision |
| $D820 | 55328 | Border colour |
| $D821 | 55329 | Background colour 0 |
| $D822 | 55330 | Background colour 1 |
| $D823 | 55331 | Background colour 2 |
| $D824 | 55332 | Background colour 3 |
| $D825 | 55333 | Sprite multicolour Reg 1 |
| $D826 | 55334 | Sprite multicolour Reg 2 |
| $D827 | 55335 | Sprite 0 colour |
| $D828 | 55336 | Sprite 1 colour |
| $D829 | 55337 | Sprite 2 colour |
| $D82A | 55338 | Sprite 3 colour |
| $D82B | 55339 | Sprite 4 colour |
| $D82C | 55340 | Sprite 5 colour |
| $D82D | 55341 | Sprite 6 colour |
| $D82E | 55342 | Sprite 7 colour |
