diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/misc/mos6522.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/hw/misc/mos6522.h b/include/hw/misc/mos6522.h index babea99..0bc22a8 100644 --- a/include/hw/misc/mos6522.h +++ b/include/hw/misc/mos6522.h @@ -65,6 +65,21 @@ #define T1MODE 0xc0 /* Timer 1 mode */ #define T1MODE_CONT 0x40 /* continuous interrupts */ +/* Bits in PCR */ +#define CB2_CTRL_MASK 0xe0 +#define CB2_CTRL_SHIFT 5 +#define CB1_CTRL_MASK 0x10 +#define CB1_CTRL_SHIFT 4 +#define CA2_CTRL_MASK 0x0e +#define CA2_CTRL_SHIFT 1 +#define CA1_CTRL_MASK 0x1 +#define CA1_CTRL_SHIFT 0 + +#define C2_POS 0x2 +#define C2_IND 0x1 + +#define C1_POS 0x1 + /* VIA registers */ #define VIA_REG_B 0x00 #define VIA_REG_A 0x01 |