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Removed union and structures for Suzy math

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This commit is contained in:
Alex Thissen 2024-10-28 14:20:09 +01:00
parent 1f1a004a05
commit 0c018919fe
1 changed files with 20 additions and 56 deletions
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76
include/_suzy.h
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@ -227,36 +227,7 @@ enum {
SPRITEWORKING = 0x01 // sprite process is active
};
// Structures for math registers
struct _math_unsigned_multiply {
unsigned int factor1; // 0xFC52 - 0xFC53
unsigned int factor2; // 0xFC54 - 0xFC55 write starts multiply
unsigned char unused2[10]; // 0xFC56 - 0xFC5F do not use
unsigned long product; // 0xFC60 - 0xFC63
unsigned char unused3[8]; // 0xFC64 - 0xFC6B do not use
unsigned long accumulate; // 0xFC6C - 0xFC6F
};
struct _math_signed_multiply {
int factor1; // 0xFC52 - 0xFC53
int factor2; // 0xFC54 - 0xFC55 write starts multiply
unsigned char unused2[10]; // 0xFC56 - 0xFC5F do not use
long product; // 0xFC60 - 0xFC63
unsigned char unused3[8]; // 0xFC64 - 0xFC6B do not use
long accumulate; // 0xFC6C - 0xFC6F
};
struct _math_divide {
unsigned long quotient; // 0xFC52 - 0xFC55
unsigned int divisor; // 0xFC56 - 0xFC57
unsigned char unused2[8]; // 0xFC58 - 0xFC5F do not use
unsigned int dividend2; // 0xFC60 - 0xFC61
unsigned int dividend1; // 0xFC62 - 0xFC63 write starts divide
unsigned char unused3[8]; // 0xFC64 - 0xFC6B do not use
unsigned long remainder; // 0xFC6C - 0xFC6F
};
/* Suzy Hardware Registers */
// Suzy hardware registers
struct __suzy {
unsigned char *tmpadr; // 0xFC00 Temporary address
unsigned int tiltacc; // 0xFC02 Tilt accumulator
@ -284,29 +255,22 @@ struct __suzy {
unsigned char *procaddr; // 0xFC2E address of current spr data proc
unsigned char unused0[32]; // 0xFC30 - 0xFC4F reserved/unused
unsigned char unused1[2]; // 0xFC50 - 0xFC51 do not use
union {
struct {
unsigned char mathd; // 0xFC52
unsigned char mathc; // 0xFC53
unsigned char mathb; // 0xFC54
unsigned char matha; // 0xFC55 write starts a multiply operation
unsigned char mathp; // 0xFC56
unsigned char mathn; // 0xFC57
unsigned char unused2[8]; // 0xFC58 - 0xFC5F do not use
unsigned char mathh; // 0xFC60
unsigned char mathg; // 0xFC61
unsigned char mathf; // 0xFC62
unsigned char mathe; // 0xFC63 write starts a divide operation
unsigned char unused3[8]; // 0xFC64 - 0xFC6B do not use
unsigned char mathm; // 0xFC6C
unsigned char mathl; // 0xFC6D
unsigned char mathk; // 0xFC6E
unsigned char mathj; // 0xFC6F
};
struct _math_unsigned_multiply unsigned_multiply;
struct _math_signed_multiply signed_multiply;
struct _math_divide divide;
} math;
unsigned char mathd; // 0xFC52
unsigned char mathc; // 0xFC53
unsigned char mathb; // 0xFC54
unsigned char matha; // 0xFC55 write starts a multiply operation
unsigned char mathp; // 0xFC56
unsigned char mathn; // 0xFC57
unsigned char unused2[8]; // 0xFC58 - 0xFC5F do not use
unsigned char mathh; // 0xFC60
unsigned char mathg; // 0xFC61
unsigned char mathf; // 0xFC62
unsigned char mathe; // 0xFC63 write starts a divide operation
unsigned char unused3[8]; // 0xFC64 - 0xFC6B do not use
unsigned char mathm; // 0xFC6C
unsigned char mathl; // 0xFC6D
unsigned char mathk; // 0xFC6E
unsigned char mathj; // 0xFC6F
unsigned char unused4[16]; // 0xFC70 - 0xFC7F do not use
unsigned char sprctl0; // 0xFC80 sprite control bits 0
unsigned char sprctl1; // 0xFC81 sprite control bits 1
@ -333,9 +297,7 @@ struct __suzy {
// 0xFCC5 - 0xFCFF unused
};
// Deprecated definitions
/* Hardware Math */
// Hardware math registers
#define FACTOR_A *(unsigned int *) 0xFC54
#define FACTOR_B *(unsigned int *) 0xFC52
#define PRODUCT0 *(unsigned int *) 0xFC60
@ -353,6 +315,8 @@ struct __suzy {
#define REMAINDER1 *(unsigned int *) 0xFC6E
#define REMAINDER *(long *) 0xFC6C
// Deprecated definitions
/* MAPCTL $FFF9 */
#define HIGHSPEED 0x80
#define VECTORSPACE 0x08