Changes

| 4F00h || 100h || N || R/W || || Sprite 15 image data

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| 6000h || 2 || N || R/W || X0 || Sprite 0 X position

| 607Dh || 3 || || || || (unused)

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| 6400h || 2 || N || R/W || || Colour palette, pen 0

| 643Eh || 2 || N || R/W || || Colour palette, sprite colour 15

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| 6800h || 1 || Y || W || PRI || Programmable raster interrupt scan line

| 680Fh || 1 || || R || ADC7 || Analogue input channel 7

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| 6C00h || 2 || N || W || SAR0 || "DMA" channel 0 address pointer

| 6C0Fh || 1 || Y || R/W || DCSR || "DMA" control/status register

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