# HG changeset patch
# User Laurens Holst <laurens@grauw.nl>
# Date 1595676609 -7200
#      Sat Jul 25 13:30:09 2020 +0200
# Node ID 56b8b53f1198261a6fcbc32803658e1236856421
# Parent  14802ff424bf7a37e90da1a7b7ea8292f29588ee
OPL3/OPNFMOnSFG: Correctly round the clock for multiples of 315 / 88 MHz.

diff --git a/src/drivers/OPL3.asm b/src/drivers/OPL3.asm
--- a/src/drivers/OPL3.asm
+++ b/src/drivers/OPL3.asm
@@ -8,7 +8,7 @@
 OPL3_FM2_ADDRESS: equ 02H
 OPL3_FM2_DATA: equ 03H
 OPL3_FM2_NEW: equ 05H
-OPL3_CLOCK: equ 14318181
+OPL3_CLOCK: equ 14318182
 OPL3_TIMER_1: equ 02H
 OPL3_FLAG_CONTROL: equ 04H
 
diff --git a/src/drivers/emulations/OPNFMOnSFG.asm b/src/drivers/emulations/OPNFMOnSFG.asm
--- a/src/drivers/emulations/OPNFMOnSFG.asm
+++ b/src/drivers/emulations/OPNFMOnSFG.asm
@@ -330,7 +330,7 @@
 	ld bc,OPNFMOnSFG.WriteRegister.WriteSFGRegister
 	jp Utils_JumpIXOffsetBC
 
-; de = offset; 65536 * (log2((7159090 / 2^11 / 144) / 27.5) + 8/12 + 0.5/12/64)
+; de = offset; 65536 * (log2((7159091 / 2^11 / 144) / 27.5) + 8/12 + 0.5/12/64)
 ;                             frequency               A0      A-C#   rounding
 ; ix = this
 OPNFMOnSFG_SetFrequencyOffset:
@@ -359,7 +359,7 @@
 	ld b,a
 	ret
 
-; de = offset; 65536 * (log2((7159090 / 2^11 / 144) / 27.5) + 8/12 + 0.5/12/64)
+; de = offset; 65536 * (log2((7159091 / 2^11 / 144) / 27.5) + 8/12 + 0.5/12/64)
 ;                             frequency               A0      A-C#   rounding
 ; b.hl = octave.fraction (OPN)
 ; b.hl <- octave.fraction (OPM)