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vdp1: add COLOR_BANK macros for the COLR register

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This also adds the directly related SPCTL macros for vdp2.
This commit is contained in:
Zack Buhman 2023-08-04 00:51:58 +00:00
parent fcf31ce095
commit 3e162c8d14
2 changed files with 21 additions and 3 deletions
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15
vdp1.h
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@ -102,9 +102,22 @@ enum pmod_bit {
#define PMOD__COLOR_CALCULATION ( << 0) #define PMOD__COLOR_CALCULATION ( << 0)
}; };
// see "Pixel Data in Frame Buffer" in VDP1 manual
// see "Figure 9.1" in VDP2 manual
// - these two figures refer to the same bits (VDP1 framebuffer data)
// see "Scroll Dot Pixels" in the VDP2 manual
// - "Dot Color" (DC0, DC1, ...) is described in the "Scroll Dot
// Pixels" section.
enum colr_bit { enum colr_bit {
COLR__RGB = (1 << 15) COLR__RGB = (1 << 15)
#define COLR__ADDRESS(n) ((n) >> 3) #define COLR__LOOKUP_TABLE__ADDRESS(n) ((n) >> 3)
#define COLR__COLOR_BANK__4BPP__PALETTE(n) (((n) & 0x7f) << 4)
#define COLR__COLOR_BANK__TYPE0__PR(n) (((n) & 0b11) << 14)
#define COLR__COLOR_BANK__TYPE0__CC(n) (((n) & 0b111) << 11)
#define COLR__COLOR_BANK__TYPE1__PR(n) (((n) & 0b111) << 13)
#define COLR__COLOR_BANK__TYPE1__CC(n) (((n) & 0b11) << 11)
}; };
//enum srca_bit { //enum srca_bit {

9
vdp2.h
View File

@ -711,8 +711,13 @@ enum wctld_bit {
// }; // };
// enum lwta1l_bit { // enum lwta1l_bit {
// }; // };
// enum spctl_bit { enum spctl_bit {
// }; #define SPCTL__SPCCCS(n) (((n) & 0b11) << 12)
#define SPCTL__SPCCN(n) (((n) & 0b111) << 8)
SPCTL__SPCLMD = (1 << 5),
SPCTL__SPWINEN = (1 << 4),
#define SPCTL__SPTYPE(n) (((n) & 0b1111) << 0)
};
// enum sdctl_bit { // enum sdctl_bit {
// }; // };
// enum craofa_bit { // enum craofa_bit {