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The See the [[ASIC]] I/O page is defined as follows: {| class="wikitable"! ADDR! SIZE! POR! TYPE! MNEM! USE|-| 4000h || 100h || N || R/W || || Sprite 0 image data|-| 4100h || 100h || N || R/W || || Sprite 1 image data|-| ... || ... || ... || ... || ... || ...|-| 4F00h || 100h || N || R/W || || Sprite 15 image data|-|style="background:#efefef;" colspan="6"|''Block unused''|-| 6000h || 2 || N || R/W || X0 || Sprite 0 X position|-| 6002h || 2 || N || R/W || Y0 || Sprite 0 Y position|-| 6004h || 1 || Y || W || M0 || Sprite 0 magnification|-| 6005h || 3 || || || || (unused)|-| 6008h || 2 || N || R/W || X1 || Sprite 1 X position|-| 600Ah || 2 || N || R/W || Y1 || Sprite 1 Y position|-| 600Ch || 1 || Y || W || M1 || Sprite 1 magnification|-| 600Dh || 3 || || || || (unused)|-| ... || ... || ... || ... || ... || ...|-| 6078h || 2 || N || R/W || X15 || Sprite 15 X position|-| 607Ah || 2 || N || R/W || Y15 || Sprite 15 Y position|-| 607Ch || 1 || N || W || M15 || Sprite 15 magnification|-| 607Dh || 3 || || || || (unused)|-|style="background:#efefef;" colspan="6"|''Block unused''|-| 6400h || 2 || N || R/W || || Colour palette, pen 0|-| 6402h || 2 || N || R/W || || Colour palette, pen 1|-| ... || ... || ... || ... || ... || ...|-| 641Eh || 2 || N || R/W || || Colour palette, pen 15|-| 6420h || 2 || N || R/W || || Colour palette, border|-| 6422h || 2 || N || R/W || || Colour palette, sprite colour 1|-| 6424h || 2 || N || R/W || || Colour palette, sprite colour 2|-| ... || ... || ... || ... || ... || ...|-| 643Eh || 2 || N || R/W || || Colour palette, sprite colour 15|-|style="background:#efefef;" colspan="6"|''Block unused''|-| 6800h || 1 || Y || W || PRI || Programmable raster interrupt scan line|-| 6801h || 1 || Y || W || SPLT || Screen split scan line|-| 6802h || 2 || N || W || SSA || Screen split secondary start address|-| 6804h || 1 || Y || W || SSCR || Soft scroll control register|-| 6805h || 1 || N || W || IVR || Interrupt Vector (Bit 0 set to 1 on reset)|-| 6806h || 2 || || || || (unused)|-| 6808h || 1 || || R || ADC0 || Analogue input channel 0|-| 6809h || 1 || || R || ADC1 || Analogue input channel 1|-| 680Ah || 1 || || R || ADC2 || Analogue input channel 2|-| 680Bh || 1 || || R || ADC3 || Analogue input channel 3|-| 680Ch || 1 || || R || ADC4 || Analogue input channel 4|-| 680Dh || 1 || || R || ADC5 || Analogue input channel 5|-| 680Eh || 1 || || R || ADC6 || Analogue input channel 6|-| 680Fh || 1 || || R || ADC7 || Analogue input channel 7|-|style="background:#efefef;" colspan="6"|''Block unused''|-| 6C00h || 2 || N || W || SAR0 || "DMA" channel 0 address pointer|-| 6C02h || 1 || N || W || PPR0 || "DMA" channel 0 pause prescaler|-| 6C03h || 1 || || || || (unused)|-| 6C04h || 2 || N || W || SAR1 || "DMA" channel 1 address pointer|-| 6C06h || 1 || N || W || PPR1 || "DMA" channel 1 pause prescaler|-| 6C07h || 1 || || || || (unused)|-| 6C08h || 2 || N || W || SAR2 || "DMA" channel 2 address pointer|-| 6C0Ah || 1 || N || W || PPR2 || "DMA" channel 2 pause prescaler|-| 6C0Bh || 4 || || || || (unused)|-| 6C0Fh || 1 || Y || R/W || DCSR || "DMA" control/status register|-|style="background:#efefef;" colspan="6"|''Block unused''|} POR column indicates whether a register has power on reset. A "N" indicates that the contents of a register are undefined at power on. There is only one pixel per byte in sprite image data. Bits3..0 of each byte define the palette index for this pixel, bits7..4 are ignored. Sprite magnification is coded in 1 byte:* bits7..3 are ignored* bits3..2 are X magnification (00 = not displayed, 01 = x1, 10 = x2, 11 = x4)* bits1..0 are Y magnification (00 = not displayed, 01 = x1, 10 = x2, 11 = x4) A colour in the palette is coded in 2 bytes:* For first byte, bits7..4 are blue value, bits3..0 are red value* For second byte, bits7..4 are ignored, bits3..0 are green value Analog joystick axes are unsigned 6-bit values. Bits7..6 are always 0details.
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==Internal LinksRelated pages==
*[[Arnold V specs]]
*[[Arnold V Specs Revised]]
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[[Category:Programming]] [[Category:CPC Internal Components]]