From ec702335fa9c044971989706c2e3368f061e1cb9 Mon Sep 17 00:00:00 2001 From: jborza Date: Sat, 27 Apr 2019 12:53:39 +0200 Subject: [PATCH] added test for rest of branch instructions --- test6502.c | 35 ++++++++++++++++++++++++++++++++++- 1 file changed, 34 insertions(+), 1 deletion(-) diff --git a/test6502.c b/test6502.c index 2b626db..2cbdefd 100644 --- a/test6502.c +++ b/test6502.c @@ -2285,6 +2285,39 @@ void test_BEQ_skip() { assert_pc(&state, 0x04); } +void test_branch(byte opcode, byte n, byte v, byte z, byte c, word expected_pc){ + State6502 state = create_blank_state(); + state.flags.n = n; + state.flags.v = n; + state.flags.z = z; + state.flags.c = c; + char program[] = { BEQ_REL, 0xFE }; + memcpy(state.memory, program, sizeof(program)); + //act + test_step(&state); + //assert + assert_pc(&state, expected_pc); +} + +void test_branching_multiple() { + test_branch(BEQ_REL, /*N*/ 0, /*V*/ 0, /*Z*/ 0, /*C*/ 0, /*EXP_PC*/0x02); + test_branch(BEQ_REL, /*N*/ 0, /*V*/ 0, /*Z*/ 1, /*C*/ 0, /*EXP_PC*/0x00); + test_branch(BNE_REL, /*N*/ 0, /*V*/ 0, /*Z*/ 0, /*C*/ 0, /*EXP_PC*/0x00); + test_branch(BNE_REL, /*N*/ 0, /*V*/ 0, /*Z*/ 1, /*C*/ 0, /*EXP_PC*/0x02); + test_branch(BCC_REL, /*N*/ 0, /*V*/ 0, /*Z*/ 0, /*C*/ 0, /*EXP_PC*/0x00); + test_branch(BCC_REL, /*N*/ 0, /*V*/ 0, /*Z*/ 0, /*C*/ 1, /*EXP_PC*/0x02); + test_branch(BCS_REL, /*N*/ 0, /*V*/ 0, /*Z*/ 0, /*C*/ 0, /*EXP_PC*/0x00); + test_branch(BCS_REL, /*N*/ 0, /*V*/ 0, /*Z*/ 0, /*C*/ 1, /*EXP_PC*/0x02); + test_branch(BMI_REL, /*N*/ 1, /*V*/ 0, /*Z*/ 0, /*C*/ 0, /*EXP_PC*/0x00); + test_branch(BMI_REL, /*N*/ 0, /*V*/ 0, /*Z*/ 0, /*C*/ 0, /*EXP_PC*/0x02); + test_branch(BPL_REL, /*N*/ 0, /*V*/ 0, /*Z*/ 0, /*C*/ 0, /*EXP_PC*/0x00); + test_branch(BPL_REL, /*N*/ 1, /*V*/ 0, /*Z*/ 0, /*C*/ 0, /*EXP_PC*/0x02); + test_branch(BVC_REL, /*N*/ 0, /*V*/ 0, /*Z*/ 0, /*C*/ 0, /*EXP_PC*/0x00); + test_branch(BVC_REL, /*N*/ 0, /*V*/ 1, /*Z*/ 0, /*C*/ 0, /*EXP_PC*/0x02); + test_branch(BVS_REL, /*N*/ 0, /*V*/ 1, /*Z*/ 0, /*C*/ 0, /*EXP_PC*/0x00); + test_branch(BVS_REL, /*N*/ 0, /*V*/ 0, /*Z*/ 0, /*C*/ 0, /*EXP_PC*/0x02); +} + ///////////////////// typedef void fp(); @@ -2311,7 +2344,7 @@ fp* tests_adc[] = { test_ADC_IMM_multiple }; fp* tests_bit[] = { test_BIT_multiple }; fp* tests_jsr_rts[] = { test_JSR, test_JSR_RTS }; fp* tests_brk[] = { test_BRK }; -fp* tests_branch[] = { test_BEQ, test_BEQ_skip }; +fp* tests_branch[] = { test_BEQ, test_BEQ_skip, test_branching_multiple }; #define RUN(suite) run_suite(suite, sizeof(suite)/sizeof(fp*))