git.y1.nz

commit b24c539432f6fda4512a5e1c532744981b27ef09
parent c3586ef7ca7755895e59678d251dfbb85c384359
Author: Lior Halphon <LIJI32@gmail.com>
Date:   Sun,  5 Oct 2025 02:16:19 +0300

Minor optimizations to Ch4

Diffstat:
M
Core/apu.c
5
+++--

1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/Core/apu.c b/Core/apu.c
@@ -990,10 +990,11 @@ restart:;
                 cycles_left -= gb->apu.noise_channel.counter_countdown;
                 gb->apu.noise_channel.counter_countdown = divisor + gb->apu.noise_channel.delta;
                 gb->apu.noise_channel.delta = 0;
-                bool old_bit = (gb->apu.noise_channel.counter >> (gb->io_registers[GB_IO_NR43] >> 4)) & 1;
+                uint16_t mask = 1 << (gb->io_registers[GB_IO_NR43] >> 4);
+                bool old_bit = gb->apu.noise_channel.counter & mask;
                 gb->apu.noise_channel.counter++;
                 gb->apu.noise_channel.counter &= 0x3FFF;
-                bool new_bit = (gb->apu.noise_channel.counter >> (gb->io_registers[GB_IO_NR43] >> 4)) & 1;
+                bool new_bit = gb->apu.noise_channel.counter & mask;
 
                 /* Step LFSR */
                 if (new_bit && !old_bit) {

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