Comparing C64 to CPC - Revision history

Phi2x at 03:15, 30 April 2025

2025-04-30T03:15:47Z

2025-04-30T03:02:55Z

‎Comparing CPC and C64

2025-04-30T03:01:36Z

2025-04-30T03:00:40Z

2025-04-25T13:00:08Z

‎Links

2025-04-25T12:32:49Z

‎Links

2025-01-11T09:00:58Z

‎Sprite Comparisons

2025-01-11T08:55:21Z

‎Palette comparison

2025-01-11T08:39:52Z

‎How color fades are done on the C64

2025-01-11T08:23:11Z

‎Palette comparison

← Older revision		Revision as of 03:15, 30 April 2025
Line 1:		Line 1:
−	== Comparing CPC and C64 ==	+	== Comparing [[CPC]] and [[C64]] ==

	* The C64 was released in 1982, the CPC released in 1984.		* The C64 was released in 1982, the CPC released in 1984.

@@ Line 29: / Line 29: @@
 * The C64 has the VIC [[ASIC]] video chip. The CPC has the [[COTS]] [[6845 CRTC]] and an [[ASIC]] Gate-Array.
-* The CPC is made from chips purchased from various suppliers, while the C64 only uses MOS chips. Demos have serious [[CRTC]] compatibility issues on CPC while such problems don't really exist on C64, except for the PAL/NTSC split.
+* The CPC is made from chips purchased from various manufacturers, while the C64 only uses MOS chips. Demos have serious [[CRTC]] compatibility issues on CPC while such problems don't really exist on C64, except for the PAL/NTSC split.
 * The C64 tape loading is done through interrupts so is not intensive on the CPU. The CPC tape loading is very intensive on the CPU.

@@ Line 28: / Line 28: @@
 * The C64 has the VIC [[ASIC]] video chip. The CPC has the [[COTS]] [[6845 CRTC]] and an [[ASIC]] Gate-Array.
 * The C64 tape loading is done through interrupts so is not intensive on the CPU. The CPC tape loading is very intensive on the CPU.
@@ Line 36: / Line 38: @@
 * The CPC can do overscan easily and any pixels can be shown, the C64 can do overscan too, vertically can be done using interrupts but horizontally is processor intensive and only sprites can be displayed in this area.
 ==Palette comparison==

← Older revision		Revision as of 03:00, 30 April 2025
Line 36:		Line 36:

	* The CPC can do overscan easily and any pixels can be shown, the C64 can do overscan too, vertically can be done using interrupts but horizontally is processor intensive and only sprites can be displayed in this area.		* The CPC can do overscan easily and any pixels can be shown, the C64 can do overscan too, vertically can be done using interrupts but horizontally is processor intensive and only sprites can be displayed in this area.
		+
		+	* The CPC is made from chips purchased from various suppliers, while the C64 only uses MOS chips. Demos have serious [[CRTC]] compatibility issues on CPC while such problems don't really exist on C64, except for the PAL/NTSC split.

	==Palette comparison==		==Palette comparison==

← Older revision		Revision as of 13:00, 25 April 2025
Line 125:		Line 125:

	*[https://www.pepto.de/projects/colorvic/ Calculating the color palette of the VIC-II] [https://www.colodore.com/ Colodore]		*[https://www.pepto.de/projects/colorvic/ Calculating the color palette of the VIC-II] [https://www.colodore.com/ Colodore]
		+	*[https://hitmen.c02.at/temp/palstuff/ Accurately reproducing the Video Output of a Commodore C64]
	*[https://ilesj.wordpress.com/2016/03/30/old-vic-ii-colors-and-color-blending/ Distinction between old VIC-II and new VIC-II color palette]		*[https://ilesj.wordpress.com/2016/03/30/old-vic-ii-colors-and-color-blending/ Distinction between old VIC-II and new VIC-II color palette]

@@ Line 124: / Line 124: @@
 == Links ==
-*[https://www.pepto.de/projects/colorvic/ Calculating the color palette of the VIC-II]
+*[https://www.pepto.de/projects/colorvic/ Calculating the color palette of the VIC-II] [https://www.colodore.com/ Colodore]
 *[https://ilesj.wordpress.com/2016/03/30/old-vic-ii-colors-and-color-blending/ Distinction between old VIC-II and new VIC-II color palette]

@@ Line 119: / Line 119: @@
 * Each sprite can be unmagnified (mode 2 resolution), x2 (mode 1 resolution) or x4 (mode 0 resolution). They can also be magnified in height.
 * Sprite data is stored in on-board ASIC RAM.
 [[Category:CrossDev]][[Category:CPC History]][[Category:Non CPC Computers]]

@@ Line 42: / Line 42: @@
 The Amstrad's palette however is lacking in browns and greys. The colours themselves are consistent between machines.
-The C64 has a palette of 16 colours. The colours were chosen by the designers. It has a couple of greys and some browns.
+The C64 has a palette of 16 colours. The colours were chosen by the designers. It has a couple of greys and some browns. Both the CPC and the C64 have a good range of colours that can produce great pictures.
-The colours appear different on NTSC and PAL due to the way these transmit their colour signals, and in addition the colour is not always the same between machines.
-Both have a good range of colours that can produce great pictures.
+The colours appear different on NTSC and PAL due to the way these transmit their colour signals, and in addition the colour is not always the same between machines. Only the C64 PAL has the infamous brownish palette. The C64 NTSC has a more vibrant colour palette.
 [[File:Colors.png]]

← Older revision		Revision as of 08:39, 11 January 2025
Line 60:		Line 60:

	[[File:Commodore 64 color fade algorithm.png\|800px]]		[[File:Commodore 64 color fade algorithm.png\|800px]]
		+
		+	The C64 demogroup Oxyron produced the most exhaustive [[Media:C64 Colfade v2.pdf\|color fade documentation]] to any color.

	==Comparison of the SID and AY-3-8912==		==Comparison of the SID and AY-3-8912==

← Older revision		Revision as of 08:23, 11 January 2025
Line 56:		Line 56:

	[[File:Test gris CPC.png]]		[[File:Test gris CPC.png]]
		+
		+	==How color fades are done on the C64==
		+
		+	[[File:Commodore 64 color fade algorithm.png\|800px]]

	==Comparison of the SID and AY-3-8912==		==Comparison of the SID and AY-3-8912==