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AltairZ80: M68K: Changes for SIMH.

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Build: Compiled with VS 2022, Clang, gcc.
Test: Boot and run CP/M-68K from: https://schorn.ch/cpm/zip/cpm68k.zip
This commit is contained in:
Howard M. Harte
2022-10-08 00:25:04 -07:00
committed by Mark Pizzolato
parent 129ed5e1a9
commit 7fec24dbde
7 changed files with 32 additions and 19 deletions
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11
AltairZ80/m68k/m68kcpu.h
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@@ -69,9 +69,6 @@ extern "C" {
typedef signed char sint8; /* ASG: changed from char to signed char */
typedef signed short sint16;
typedef signed int sint32; /* AWJ: changed from long to int */
typedef unsigned char uint8;
typedef unsigned short uint16;
typedef unsigned int uint32; /* AWJ: changed from long to int */
/* signed and unsigned int must be at least 32 bits wide */
typedef signed int sint;
@@ -154,7 +151,7 @@ typedef uint32 uint64;
#define EXCEPTION_RESET 0
#define EXCEPTION_BUS_ERROR 2 /* This one is not emulated! */
#define EXCEPTION_ADDRESS_ERROR 3 /* This one is partially emulated (doesn't stack a proper frame yet) */
#define EXCEPTION_ILLEGAL_INSTRUCTION 4
#define EXCEPTION_ILLEGAL_INSTRUCTION_M68K 4
#define EXCEPTION_ZERO_DIVIDE 5
#define EXCEPTION_CHK 6
#define EXCEPTION_TRAPV 7
@@ -2010,11 +2007,11 @@ static inline void m68ki_exception_illegal(void)
}
#endif /* M68K_EMULATE_ADDRESS_ERROR */
m68ki_stack_frame_0000(REG_PPC, sr, EXCEPTION_ILLEGAL_INSTRUCTION);
m68ki_jump_vector(EXCEPTION_ILLEGAL_INSTRUCTION);
m68ki_stack_frame_0000(REG_PPC, sr, EXCEPTION_ILLEGAL_INSTRUCTION_M68K);
m68ki_jump_vector(EXCEPTION_ILLEGAL_INSTRUCTION_M68K);
/* Use up some clock cycles and undo the instruction's cycles */
USE_CYCLES(CYC_EXCEPTION[EXCEPTION_ILLEGAL_INSTRUCTION] - CYC_INSTRUCTION[REG_IR]);
USE_CYCLES(CYC_EXCEPTION[EXCEPTION_ILLEGAL_INSTRUCTION_M68K] - CYC_INSTRUCTION[REG_IR]);
}
/* Exception for format errror in RTE */