Allow Forcing Detection of AY/YM PSG in HBIOS

See Issue #468
1 year ago · bb4a64c35d
29 changed files with 31 additions and 0 deletions
--- a/Doc/ChangeLog.txt
+++ b/Doc/ChangeLog.txt
@ -51,6 +51,7 @@ Version 3.5
 - MAP: Added additional tools (Linker/Disasembler) to the Z80ASM Disk Image
 - PMS: Support interrupt-driven PS2 Keyboard Interface
 - D?M: Added NetBoot support for Duodyne
+- WBW: Add options to TUNE/HBIOS to force detection of MSX and RC AY/YM standard PSG ports

 Version 3.4
 -----------
--- a/Source/HBIOS/Config/RCEZ80_std.asm
+++ b/Source/HBIOS/Config/RCEZ80_std.asm
@ -81,3 +81,4 @@ SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 ;
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ180_ext_std.asm
+++ b/Source/HBIOS/Config/RCZ180_ext_std.asm
@ -87,3 +87,4 @@ PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ180	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ180_nat_std.asm
+++ b/Source/HBIOS/Config/RCZ180_nat_std.asm
@ -87,3 +87,4 @@ PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ180	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ180_z1rcc_std.asm
+++ b/Source/HBIOS/Config/RCZ180_z1rcc_std.asm
@ -95,3 +95,4 @@ PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ180	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ280_ext_std.asm
+++ b/Source/HBIOS/Config/RCZ280_ext_std.asm
@ -86,3 +86,4 @@ PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ280_nat_std.asm
+++ b/Source/HBIOS/Config/RCZ280_nat_std.asm
@ -87,3 +87,4 @@ PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ280_zz80mb_std.asm
+++ b/Source/HBIOS/Config/RCZ280_zz80mb_std.asm
@ -90,3 +90,4 @@ PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ280_zzrcc_ram_std.asm
+++ b/Source/HBIOS/Config/RCZ280_zzrcc_ram_std.asm
@ -98,3 +98,4 @@ PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ80_easy_std.asm
+++ b/Source/HBIOS/Config/RCZ80_easy_std.asm
@ -104,3 +104,4 @@ SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 ;
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ80_jbl_std.asm
+++ b/Source/HBIOS/Config/RCZ80_jbl_std.asm
@ -103,3 +103,4 @@ SN76489ENABLE	.SET	TRUE		; SN: ENABLE SN76489 SOUND DRIVER
 ;
 AY38910ENABLE	.SET	TRUE		; AY: AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ80_skz_std.asm
+++ b/Source/HBIOS/Config/RCZ80_skz_std.asm
@ -89,3 +89,4 @@ IMMENABLE	.SET	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ80_std.asm
+++ b/Source/HBIOS/Config/RCZ80_std.asm
@ -90,3 +90,4 @@ SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 ;
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ80_tiny_std.asm
+++ b/Source/HBIOS/Config/RCZ80_tiny_std.asm
@ -107,3 +107,4 @@ IMMENABLE	.SET	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ80_zrc512_std.asm
+++ b/Source/HBIOS/Config/RCZ80_zrc512_std.asm
@ -90,3 +90,4 @@ SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 ;
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ80_zrc_ram_std.asm
+++ b/Source/HBIOS/Config/RCZ80_zrc_ram_std.asm
@ -89,3 +89,4 @@ IMMENABLE	.SET	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/RCZ80_zrc_std.asm
+++ b/Source/HBIOS/Config/RCZ80_zrc_std.asm
@ -87,3 +87,4 @@ IMMENABLE	.SET	FALSE		; IMM: ENABLE IMM DISK DRIVER (IMM.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/SCZ180_sc126_std.asm
+++ b/Source/HBIOS/Config/SCZ180_sc126_std.asm
@ -91,3 +91,4 @@ PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	TRUE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ180	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/SCZ180_sc130_std.asm
+++ b/Source/HBIOS/Config/SCZ180_sc130_std.asm
@ -92,3 +92,4 @@ PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	TRUE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ180	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/SCZ180_sc140_std.asm
+++ b/Source/HBIOS/Config/SCZ180_sc140_std.asm
@ -86,3 +86,4 @@ PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_LINC	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/SCZ180_sc503_std.asm
+++ b/Source/HBIOS/Config/SCZ180_sc503_std.asm
@ -88,3 +88,4 @@ PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_LINC	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/Config/SCZ180_sc700_std.asm
+++ b/Source/HBIOS/Config/SCZ180_sc700_std.asm
@ -91,3 +91,4 @@ PRPENABLE	.SET	FALSE		; PRP: ENABLE ECB PROPELLER IO BOARD DRIVER (PRP.ASM)
 SN76489ENABLE	.SET	FALSE		; SN: ENABLE SN76489 SOUND DRIVER
 AY38910ENABLE	.SET	TRUE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AYMODE		.SET	AYMODE_RCZ180	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
--- a/Source/HBIOS/ay38910.asm
+++ b/Source/HBIOS/ay38910.asm
@ -209,6 +209,7 @@ AY38910_INIT:
 	OUT	(AY_ACR),A		; SET INIT AUX CONTROL REG
 #ENDIF
 ;
+#IF (!AY_FORCE)
 	LD	DE,(AY_R2CHBP*256)+$55	; SIMPLE HARDWARE PROBE
 	CALL	AY_WRTPSG		; WRITE AND
 	CALL	AY_RDPSG		; READ TO A
@ -221,6 +222,8 @@ AY38910_INIT:
 	LD	A,$FF			; UNSUCCESSFULL INIT
 	RET
 ;
+#ENDIF
+;
 AY_FND:
 	LD	IY, AY_IDAT		; SETUP FUNCTION TABLE
 	LD	BC, AY_FNTBL		; POINTER TO INSTANCE DATA
--- a/Source/HBIOS/cfg_MASTER.asm
+++ b/Source/HBIOS/cfg_MASTER.asm
@ -448,6 +448,7 @@ SNMODE		.EQU	SNMODE_NONE	; SN: DRIVER MODE: SNMODE_[NONE|RC|VGM|DUO]
 AY38910ENABLE	.EQU	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.EQU	1789772		; AY: PSG CLOCK FREQ, ASSUME MSX STD
 AYMODE		.EQU	AYMODE_NONE	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.EQU	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
 ;
 SPKENABLE	.EQU	FALSE		; SPK: ENABLE RTC LATCH IOBIT SOUND DRIVER (SPK.ASM)
 ;
--- a/Source/HBIOS/cfg_RCEZ80.asm
+++ b/Source/HBIOS/cfg_RCEZ80.asm
@ -386,6 +386,7 @@ AY_CLK		.SET	CPUOSC/4	; AY: PSG CLOCK FREQ, ASSUME MSX STD
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
 ;
 SPKENABLE	.SET	FALSE		; SPK: ENABLE RTC LATCH IOBIT SOUND DRIVER (SPK.ASM)
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
 ;
 DMAENABLE	.SET	FALSE		; DMA: ENABLE DMA DRIVER (DMA.ASM)
 DMABASE		.SET	$E0		; DMA: DMA BASE ADDRESS
--- a/Source/HBIOS/cfg_RCZ180.asm
+++ b/Source/HBIOS/cfg_RCZ180.asm
@ -379,6 +379,7 @@ SNMODE		.SET	SNMODE_RC	; SN: DRIVER MODE: SNMODE_[NONE|RC|VGM|DUO]
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.SET	1789772		; AY: PSG CLOCK FREQ, ASSUME MSX STD
 AYMODE		.SET	AYMODE_RCZ180	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
 ;
 SPKENABLE	.SET	FALSE		; SPK: ENABLE RTC LATCH IOBIT SOUND DRIVER (SPK.ASM)
 ;
--- a/Source/HBIOS/cfg_RCZ280.asm
+++ b/Source/HBIOS/cfg_RCZ280.asm
@ -389,6 +389,7 @@ SNMODE		.SET	SNMODE_RC	; SN: DRIVER MODE: SNMODE_[NONE|RC|VGM|DUO]
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.SET	1789772		; AY: PSG CLOCK FREQ, ASSUME MSX STD
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
 ;
 SPKENABLE	.SET	FALSE		; SPK: ENABLE RTC LATCH IOBIT SOUND DRIVER (SPK.ASM)
 ;
--- a/Source/HBIOS/cfg_RCZ80.asm
+++ b/Source/HBIOS/cfg_RCZ80.asm
@ -384,6 +384,7 @@ SNMODE		.SET	SNMODE_RC	; SN: DRIVER MODE: SNMODE_[NONE|RC|VGM|DUO]
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.SET	1789772		; AY: PSG CLOCK FREQ, ASSUME MSX STD
 AYMODE		.SET	AYMODE_RCZ80	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
 ;
 SPKENABLE	.SET	FALSE		; SPK: ENABLE RTC LATCH IOBIT SOUND DRIVER (SPK.ASM)
 ;
--- a/Source/HBIOS/cfg_SCZ180.asm
+++ b/Source/HBIOS/cfg_SCZ180.asm
@ -379,6 +379,7 @@ SNMODE		.SET	SNMODE_RC	; SN: DRIVER MODE: SNMODE_[NONE|RC|VGM|DUO]
 AY38910ENABLE	.SET	FALSE		; AY: ENABLE AY-3-8910 / YM2149 SOUND DRIVER
 AY_CLK		.SET	1789772		; AY: PSG CLOCK FREQ, ASSUME MSX STD
 AYMODE		.SET	AYMODE_RCZ180	; AY: DRIVER MODE: AYMODE_[SCG|N8|RCZ80|RCZ180|MSX|LINC|MBC|DUO|NABU]
+AY_FORCE	.SET	FALSE		; AY: BYPASS AUTO-DETECT, FORCED PRESENT
 ;
 SPKENABLE	.SET	FALSE		; SPK: ENABLE RTC LATCH IOBIT SOUND DRIVER (SPK.ASM)
 ;