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https://github.com/prirun/p50em.git
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7601dcb718
added INCRP macro - now does 32-bit increments of RP for speed added ADDRP macro to return RP incremented by n (CGT) changed globals to static (didn't help speed much - thought it might) moved around some functions changed shift instructions to create bitmask at runtime (faster) manually inlined mathexception (but used inline keyword in later revs)
21 lines
643 B
C
21 lines
643 B
C
/* define mapping between memory addresses and the current register set */
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static unsigned short memtocrs[] = {
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X, /* 0 = X */
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A, /* 1 = A */
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B, /* 2 = B */
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Y, /* 3 = Y */
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FLTH, /* 4 = FAC1/FLTH */
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FLTL, /* 5 = FAC1/FLTL */
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FEXP, /* 6 = FAC1/FEXP */
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-1, /* 7 = PC (this is in the microcode scratch register set - TR7) */
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32, /* 10 = unnamed */
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FCODE, /* 11 = FCODE */
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FADDR+1,/* 12 = FADDR (word) */
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16, /* 13 = unnamed */
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SBH, /* 14 = unnamed (SB seg) */
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SBL, /* 15 = unnamed (SB word) */
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LBH, /* 16 = unnamed (LB seg) */
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LBL}; /* 17 = unnamed (LB word) */
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