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SNES ADC and SBC tests

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Programs to test ADC and SBC operations by Shay Green.

By: Evan G
Last updated: June 24, 2017

This is a set of programs to test ADC (Add With Carry) and SBC (Subtract with Borrow from Accumulator) instructions. The readme provides more details:

SNES ADC/SBC tests
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These tests verify 8-bit and 16-bit ADC and SBC operation for binary and
decimal modes. Each takes about 15 seconds.

Each tests with the indicated flags over all 65536 combinations of A and
the operand (for 16-bit versions, only interesting combinations), and
verifies the resulting A and flags (all 8 flags). The final test has
various other flags set which shouldn't affect operation, just in case
an emulator incorrectly uses them.

Included in source/ are C++ implementations of the operations that pass
the above tests.


Building with ca65
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To assemble a test ROM with ca65, use the following commands:

	ca65 --cpu 65816 -I common -o test.o source_filename_here.s
	ld65 -C smc.cfg test.o -o test.smc

-- 
Shay Green 
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test_adc.smc
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test_adc_16.smc
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test_sbc.smc
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test_sbc_16.smc

Download here


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