Changes

Jump to: navigation, search

Comparing C64 to CPC

No change in size, 12:42, 9 April 2014
/* Comparing CPC and C64 */
* The C64 has 50Hz and 60Hz variants (for regions where PAL and NTSC are used), the clocks inside the C64 are based off this. The CPC is 50Hz only.
* The C64's color RAM, SID, VIC and other hardware can be made visible within the 6510's memory space. Access to them is done using normal read/write operations. All access to the CPC's hardware is done using the Z80's special I/O instructions.
* The C64 has pixel-by-pixel hardware scrolling in both the horizontal and vertical. The CPC has hardware scrolling. Using R5 of the CRTC and Rupture demo technique pixel-by-pixel scrolling in the vertical direction can be achieved. Using R3 of the CRTC 1 byte at a time in the horizontal is possible (which equates to 2 pixels in mode 0, 4 in mode 1, and 8 in mode 2).
2,541
edits