Sega 8-bit resources: Difference between revisions
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As the highmost bits are invalid, the value obtained from reading this port must be masked.
=== Test programs ===
{| class="wikitable"
! Program !! Element to test !! Description
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| [[Media:Sega Master System - Audio control port test.sms|ACR Test]] || Port 0xF2 || Looped series of reads and writes to the audio control port
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| [[Media:Sega Master System - PSG 0 (write).sms|PSG 0 (write)]] || Port 0x7F || Looped series of writes to PSG 0
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| [[Media:Sega Master System - PSG 1 (write).sms|PSG 1 (write)]] || Port 0x7E || Looped series of writes to PSG 1
|-
| [[Media:PSG 2 write.sms|PSG 2 (write)]] || Port 0x7D || Looped series of writes to PSG 2
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| [[Media:PSG 3 write.sms|PSG 3 (write)]] || Port 0x7C || Looped series of writes to PSG 3
|}
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