Support Serial Ports on ESP32 Board

Source/HBIOS/esp.asm

@@ -32,12 +32,25 @@ ESP_1_SPARE	.EQU	%00100000
 ; COMMAND OPCODES
 ;
 ESP_CMD_NOP	.EQU	0		; NO OP
-ESP_CMD_COUT	.EQU	1		; CHAR OUT
-ESP_CMD_SOUT	.EQU	2		; STRING OUT
-ESP_CMD_KIN	.EQU	3		; KEY IN
-ESP_CMD_KST	.EQU	4		; KBD BUF STATUS
+ESP_0_CMD_COUT	.EQU	1		; CHAR OUT
+ESP_0_CMD_SOUT	.EQU	2		; STRING OUT
+ESP_0_CMD_KIN	.EQU	3		; KEY IN
+ESP_0_CMD_KST	.EQU	4		; KBD BUF STATUS
+ESP_CMD_SBAUD	.EQU	6		; SET SERIAL BAUD RATE
+ESP_CMD_SMODE	.EQU	7		; SET SERIAL LINE MODE
+ESP_CMD_SOUT	.EQU	8		; SERIAL BYTE OUT
+ESP_CMD_SIN	.EQU	10		; SERIAL BYTE IN
+ESP_CMD_SST	.EQU	11		; SERIAL INPUT STATUS
 ESP_CMD_DISC	.EQU	$FF		; DISCOVER
 ;
+; ESP CONFIG TABLE ENTRY OFFSETS
+;
+ESP_CFG_DEV	.EQU	0		; DEVICE NUMBER
+ESP_CFG_IO	.EQU	1		; ESP I/O PORT
+ESP_CFG_ST	.EQU	2		; ESP STATUS PORT
+ESP_CFG_RDYMSK	.EQU	3		; ESP READY MASK
+ESP_CFG_BSYMSK	.EQU	4		; ESP BUSY MASK
+;
 ; GLOBAL ESP INITIALIZATION
 ;
 ESP_INIT:
@@ -47,16 +60,63 @@ ESP_INIT:
 	LD	A,ESP_IOBASE
 	CALL	PRTHEXBYTE
 ;
+	XOR	A			; ZERO ACCUM
+	LD	(ESP_PRES),A		; CLEAR MODULE PRESENCE BITS
+;
+	; DETECT FIRST ESP32 MODULE
+	PRTS(" A=$")
+	LD	IY,ESPSER0_CFG
 	CALL	ESP_DETECT
+	JR	Z,ESP_INIT1		; FOUND
 	LD	DE,ESP_STR_NOHW
-	JP	NZ,WRITESTR
+	CALL	WRITESTR
+	JR	ESP_INIT2
 ;
-	; PRINT FIRMWARE VERSION
-	PRTS(" F/W=$")
+ESP_INIT1:
 	CALL	ESP_PRTVER
+	
+	LD	A,(ESP_PRES)
+	SET	0,A
+	LD	(ESP_PRES),A
+	
 ;
+ESP_INIT2:
+	; DETECT SECOND ESP32 MODULE
+	PRTS(" B=$")
+	LD	IY,ESPSER1_CFG
+	CALL	ESP_DETECT
+	JR	Z,ESP_INIT3		; FOUND
+	LD	DE,ESP_STR_NOHW
+	CALL	WRITESTR
+	JR	ESP_INIT4
+;
+ESP_INIT3:
+	CALL	ESP_PRTVER
+
+	LD	A,(ESP_PRES)
+	SET	1,A
+	LD	(ESP_PRES),A
+
+;
+ESP_INIT4:
+	; INITIALIZE FIRST MODULE CHILD DRIVERS
+	LD	A,(ESP_PRES)
+	BIT	0,A
+	JR	Z,ESP_INIT5
+	LD	IY,ESPSER0_CFG
+	CALL	ESPSER_INIT		; SERIAL INITIALIZATION
+	LD	IY,ESPCON0_CFG
 	CALL	ESPCON_INIT		; CONSOLE INITIALIZATION
 ;
+ESP_INIT5:
+	; INITIALIZE SECOND MODULE CHILD DRIVERS
+	LD	A,(ESP_PRES)
+	BIT	1,A
+	JR	Z,ESP_INIT6
+	LD	IY,ESPSER1_CFG
+	CALL	ESPSER_INIT		; SERIAL INITIALIZATION
+;
+ESP_INIT6:
 	RET
 ;
 ;==================================================================================================
@@ -71,24 +131,14 @@ ESP_DETECT:
 ;
 	; LOOK FOR SIGNATURE STARTING WITH "ESP"
 	CALL	ESP_INWAIT		; ATTEMPT TO GET CHAR
-	;CALL	PRTHEXBYTE
 	CP	'E'
 	RET	NZ
 	CALL	ESP_INWAIT		; ATTEMPT TO GET CHAR
-	;CALL	PRTHEXBYTE
 	CP	'S'
 	RET	NZ
 	CALL	ESP_INWAIT		; ATTEMPT TO GET CHAR
-	;CALL	PRTHEXBYTE
 	CP	'P'
 	RET
-
-	;LD	DE,10			; DELAY 160US
-	;CALL	VDELAY			; ... TO ENSURE OUTPUT RDY SET
-	;IN	A,(ESP_STAT)		; GET STATUS
-	;AND	ESP_0_RDY		; ISOLATE OUTPUT READY BIT
-	;XOR	ESP_0_RDY		; INVERT SO 0=FOUND
-	;RET				; DONE
 ;
 ; CLEAR ESP INPUT QUEUE
 ;
@@ -98,9 +148,10 @@ ESP_CLR0:
 	CALL	ESP_WTNBSY		; WAIT TILL NOT BUSY
 	RET	NZ			; BAIL OUT IF TIMEOUT
 	IN	A,(ESP_STAT)		; GET STATUS
-	AND	ESP_0_RDY		; IS THERE MORE DATA?
+	AND	(IY+ESP_CFG_RDYMSK)	; IS THERE MORE DATA?
 	RET	Z			; IF NOT, DONE
-	IN	A,(ESP_0_IO)		; GET CHAR
+	LD	C,(IY+ESP_CFG_IO)	; ESP I/O PORT
+	IN	A,(C)			; GET BYTE
 	DJNZ	ESP_CLR0		; LOOP TILL DONE
 	OR	$FF			; SIGNAL FAILURE
 	RET
@@ -115,7 +166,8 @@ ESP_PRTVER:
 ESP_PRTVER1:
 	CALL	ESP_WTNBSY		; WAIT TILL NOT BUSY
 	IN	A,(ESP_STAT)		; GET STATUS
-	AND	ESP_0_RDY		; ISOLATE OUTPUT READY BIT
+	;AND	ESP_0_RDY		; ISOLATE OUTPUT READY BIT
+	AND	(IY+ESP_CFG_RDYMSK)	; ISOLATE OUTPUT READY BIT
 	RET	Z			; DONE IF NOTHING READY
 	CALL	ESP_IN			; GET NEXT CHAR
 	CALL	COUT			; PRINT CHAR
@@ -127,7 +179,8 @@ ESP_OUT:
 	PUSH	AF			; SAVE VALUE
 	CALL	ESP_WTNBSY		; WAIT TILL NOT BUSY
 	POP	AF			; POP VALUE
-	OUT	(ESP_0_IO),A		; SEND CHARACTER
+	LD	C,(IY+ESP_CFG_IO)	; ESP I/O PORT
+	OUT	(C),A			; SEND BYTE
 	JR	ESP_WTBSY		; RETURN VIA WTBSY
 ;
 ; GET BYTE FROM ESP (BLOCKING)
@@ -142,7 +195,8 @@ ESP_INWAIT:
 ESP_IN:
 	CALL	ESP_WTNBSY		; WAIT TILL NOT BUSY
 ESP_IN1:	
-	IN	A,(ESP_0_IO)		; GET BYTE
+	LD	C,(IY+ESP_CFG_IO)	; ESP I/O PORT
+	IN	A,(C)			; GET BYTE
 	PUSH	AF			; SAVE VALUE
 	CALL	ESP_WTBSY		; WAIT TILL BUSY
 	POP	AF			; RESTORE VALUE
@@ -153,8 +207,9 @@ ESP_IN1:
 ESP_WTNBSY:
 	LD	B,0			; MAX TRIES
 ESP_WTNBSY1:	
-	IN	A,(ESP_STAT)		; GET STATUS
-	AND	ESP_0_BUSY		; IS ESP BUSY?
+	LD	C,(IY+ESP_CFG_ST)	; ESP STATUS PORT
+	IN	A,(C)			; GET STATUS
+	AND	(IY+ESP_CFG_BSYMSK)	; IS ESP BUSY?
 	RET	Z			; RETURN IF NOT BUSY
 	DJNZ	ESP_WTNBSY1		; ELSE LOOP
 	OR	$FF			; SIGNAL TIMEOUT
@@ -165,9 +220,10 @@ ESP_WTNBSY1:
 ESP_WTBSY:
 	LD	B,20			; MAX TRIES
 ESP_WTBSY1:	
-	IN	A,(ESP_STAT)		; GET STATUS
-	AND	ESP_0_BUSY		; IS ESP BUSY?
-	XOR	ESP_0_BUSY		; INVERT
+	LD	C,(IY+ESP_CFG_ST)	; ESP STATUS PORT
+	IN	A,(C)			; GET STATUS
+	XOR	$FF			; INVERT SO 0=BUSY
+	AND	(IY+ESP_CFG_BSYMSK)	; IS ESP BUSY?
 	RET	Z			; RETURN IF BUSY
 	DJNZ	ESP_WTBSY1		; ELSE LOOP
 	OR	$FF			; SIGNAL TIMEOUT
@@ -178,9 +234,10 @@ ESP_WTBSY1:
 ESP_WTRDY:
 	LD	B,0			; MAX TRIES
 ESP_WTRDY1:
-	IN	A,(ESP_STAT)		; GET STATUS
-	AND	ESP_0_RDY		; IS ESP READY TO OUTPUT
-	XOR	ESP_0_RDY		; INVERT, 0=READY
+	LD	C,(IY+ESP_CFG_ST)	; ESP STATUS PORT
+	IN	A,(C)			; GET STATUS
+	XOR	$FF			; INVERT SO 0=READY
+	AND	(IY+ESP_CFG_RDYMSK)	; IS ESP READY TO OUTPUT
 	RET	Z			; RETURN IF READY
 	DJNZ	ESP_WTRDY1		; ELSE LOOP
 	OR	$FF			; SIGNAL TIMEOUT
@@ -188,6 +245,8 @@ ESP_WTRDY1:
 ;
 ;
 ;
+ESP_PRES		.DB	0	; MODULE PRESENCE BITS
+;
 ESP_STR_NOHW		.TEXT	"NOT PRESENT$"
 ESP_STR_UPGRADE		.TEXT	"!!!UPGRADE REQUIRED!!!$"
 ;
@@ -202,9 +261,26 @@ ESPCON_COLS	.EQU	80		; VGA DISPLAY COLS
 ;
 ;
 ESPCON_INIT:
+	LD	A,(ESPCON_DEVCNT)	; GET ESPCON PHYSICAL DEVICE COUNT
+	LD	(IY+ESP_CFG_DEV),A	; SAVE PHYSICAL UNIT NUMBER
+	INC	A			; UPDATE COUNT
+	LD	(ESPCON_DEVCNT),A	; SAVE COUNT
 ;
-	CALL	NEWLINE
-	PRTS("ESPCON:$")
+; ADD OURSELVES TO CIO DISPATCH TABLE
+;
+	LD	BC,ESPCON_FNTBL		; BC := FUNCTION TABLE ADDRESS
+	PUSH	IY			; COPY CONFIG ENTRY PTR
+	POP	DE			; ... TO DE
+	CALL	CIO_ADDENT		; ADD ENTRY, A := UNIT ASSIGNED
+	LD	(HCB + HCB_CRTDEV),A	; SET OURSELVES AS THE CRT DEVICE
+;
+; ANNOUNCE OURSLEVES
+;
+	CALL	NEWLINE			; FORMATTING
+	PRTS("ESPCON$")			; NAME
+	LD	A,(IY+ESP_CFG_DEV)	; GET PHYSICAL UNIT NUMBER
+	CALL	PRTDECB			; UNIT STILL IN A FROM ABOVE
+	CALL	PC_COLON		; FORMATTING
 ;
 	; DISPLAY CONSOLE DIMENSIONS
 	CALL	PC_SPACE
@@ -216,14 +292,6 @@ ESPCON_INIT:
 	CALL	PRTDECB
 	CALL	PRTSTRD
 	.TEXT	" TEXT (ANSI)$"
-;
-; ADD OURSELVES TO CIO DISPATCH TABLE
-;
-	LD	D,0			; PHYSICAL UNIT IS ZERO
-	LD	E,CIODEV_ESPCON		; DEVICE TYPE
-	LD	BC,ESPCON_FNTBL		; BC := FUNCTION TABLE ADDRESS
-	CALL	CIO_ADDENT		; ADD ENTRY, A := UNIT ASSIGNED
-	LD	(HCB + HCB_CRTDEV),A	; SET OURSELVES AS THE CRT DEVICE
 ;
 	XOR	A			; SIGNAL SUCCESS
 	RET
@@ -247,7 +315,7 @@ ESPCON_FNTBL:
 ESPCON_IN:
 	CALL	ESPCON_IST
 	JR	Z,ESPCON_IN
-	LD	A,ESP_CMD_KIN		; KBD INPUT
+	LD	A,ESP_0_CMD_KIN		; KBD INPUT
 	CALL	ESP_OUT			; SEND CMD OPCODE
 	CALL	ESP_INWAIT		; GET KEY
 	LD	E,A			; PUT IN E
@@ -257,7 +325,7 @@ ESPCON_IN:
 ;
 ;
 ESPCON_IST:
-	LD	A,ESP_CMD_KST		; KBD BUF STATUS
+	LD	A,ESP_0_CMD_KST		; KBD BUF STATUS
 	CALL	ESP_OUT			; SEND CMD OPCODE
 	CALL	ESP_INWAIT		; GET BUF SIZE
 	OR	A			; SET FLAGS
@@ -269,7 +337,7 @@ ESPCON_IST:
 ;
 ESPCON_OUT:
 	PUSH	DE
-	LD	A,ESP_CMD_COUT		; CHAR OUT OPCODE
+	LD	A,ESP_0_CMD_COUT	; CHAR OUT OPCODE
 	CALL	ESP_OUT
 	POP	DE
 	LD	A,E
@@ -280,7 +348,8 @@ ESPCON_OUT:
 ;
 ;
 ESPCON_OST:
-	OR	$FF			; SIGNAL OUTPUT QUEUE READY
+	XOR	A			; ZERO ACCUM
+	INC	A			; ACCUM := 1 TO SIGNAL 1 BUFFER POSITION
 	RET				; RETURN
 ;
 ;
@@ -301,14 +370,239 @@ ESPCON_QUERY:
 ;
 ESPCON_DEVICE:
 	LD	D,CIODEV_ESPCON		; D := DEVICE TYPE
-	LD	E,0			; E := DEVICE NUM, ALWAYS 0
+	LD	E,(IY+ESP_CFG_DEV)	; E := DEVICE NUM
 	LD	C,$BF			; C := DEVICE TYPE, 0xBF IS PROP TERM
 	LD	H,0			; H := 0, DRIVER HAS NO MODES
-	LD	L,ESP_IOBASE		; L := BASE I/O ADDRESS
+	LD	L,(IY+ESP_CFG_IO)	; L := BASE I/O ADDRESS
+	XOR	A			; SIGNAL SUCCESS
+	RET
+;
+; ESPCON CONFIGURATION
+;
+ESPCON_CFG:
+ESPCON0_CFG:
+	.DB	0				; DEVICE NUMBER (UPDATED DURING INIT)
+	.DB	ESP_0_IO			; ESP DATA PORT
+	.DB	ESP_STAT			; ESP STATUS PORT
+	.DB	ESP_0_RDY			; ESP READY BIT MASK
+	.DB	ESP_0_BUSY			; ESP BUSY BIT MASK
+;
+;
+;
+ESPCON_DEVCNT	.DB	0			; ESPCON DEVICES COUNT
+;
+;==================================================================================================
+; ESP32 SERIAL DRIVER
+;==================================================================================================
+;
+ESPSER_LINECFG		.EQU	SER_115200_8N1
+;
+ESPSER_CFG_LINE		.EQU	5
+;
+;
+;
+ESPSER_INIT:
+	LD	A,(ESPSER_DEVCNT)	; GET ESPSER PHYSICAL DEVICE COUNT
+	LD	(IY+ESP_CFG_DEV),A	; SAVE PHYSICAL UNIT NUMBER
+	INC	A			; UPDATE COUNT
+	LD	(ESPSER_DEVCNT),A	; SAVE COUNT
+;
+; ADD OURSELVES TO CIO DISPATCH TABLE
+;
+	LD	BC,ESPSER_FNTBL		; BC := FUNCTION TABLE ADDRESS
+	PUSH	IY			; COPY CONFIG ENTRY PTR
+	POP	DE			; ... TO DE
+	CALL	CIO_ADDENT		; ADD ENTRY, A := UNIT ASSIGNED
+;
+; ANNOUNCE OURSLEVES
+;
+	CALL	NEWLINE			; FORMATTING
+	PRTS("ESPSER$")			; NAME
+	LD	A,(IY+ESP_CFG_DEV)	; GET PHYSICAL UNIT NUMBER
+	CALL	PRTDECB			; UNIT STILL IN A FROM ABOVE
+	CALL	PC_COLON		; FORMATTING
+;
+	PRTS(" MODE=$")				; FORMATTING
+	LD	E,(IY+ESPSER_CFG_LINE+0)	; FIRST CONFIG BYTE TO E
+	LD	D,(IY+ESPSER_CFG_LINE+1)	; SECOND CONFIG BYTE TO D
+	CALL	PS_PRTSC0			; PRINT CONFIG
+;
+; TODO: PRINT SERIAL CONFIG
+;
 	XOR	A			; SIGNAL SUCCESS
 	RET
 ;
-;=============================================================================
-; DATA STORAGE
-;=============================================================================
+; DRIVER FUNCTION TABLE
+;
+ESPSER_FNTBL:
+	.DW	ESPSER_IN
+	.DW	ESPSER_OUT
+	.DW	ESPSER_IST
+	.DW	ESPSER_OST
+	.DW	ESPSER_INITDEV
+	.DW	ESPSER_QUERY
+	.DW	ESPSER_DEVICE
+#IF (($ - ESPSER_FNTBL) != (CIO_FNCNT * 2))
+	.ECHO	"*** INVALID ESPSER FUNCTION TABLE ***\n"
+#ENDIF
+;
+;
+;
+ESPSER_IN:
+	CALL	ESPSER_IST
+	JR	Z,ESPSER_IN
+	LD	A,ESP_CMD_SIN		; SERIAL INPUT
+	CALL	ESP_OUT			; SEND CMD OPCODE
+	CALL	ESP_INWAIT		; GET KEY
+	LD	E,A			; PUT IN E
+	XOR	A			; SIGNAL SUCCES
+	RET				; AND DONE
+;
+;
+;
+ESPSER_IST:
+	LD	A,ESP_CMD_SST		; SERIAL STATUS
+	CALL	ESP_OUT			; SEND CMD OPCODE
+	CALL	ESP_INWAIT		; GET BUF SIZE
+	OR	A			; SET FLAGS
+	RET	Z			; AND DONE
+	OR	A
+	RET
+;
+;
+;
+ESPSER_OUT:
+	PUSH	DE
+	LD	A,ESP_CMD_SOUT		; CHAR OUT OPCODE
+	CALL	ESP_OUT
+	POP	DE
+	LD	A,E
+	CALL	ESP_OUT			; SEND CHAR VALUE
+	XOR	A			; SIGNAL SUCCESS
+	RET
+;
+;
+;
+ESPSER_OST:
+	XOR	A			; ZERO ACCUM
+	INC	A			; ACCUM := 1 TO SIGNAL 1 BUFFER POSITION
+	RET				; RETURN
+;
+;
+;
+ESPSER_INITDEV:
+	PUSH	DE			; SAVE INCOMING CONFIG WORD
+;
+	; XLATE NEW LINE MODE INTO C
+	LD	A,E
+	AND	%00111111		; ISOLATE MODE BITS
+	LD	C,0			; 8N1 = 0
+	CP	SER_DATA8 | SER_PARNONE | SER_STOP1
+	JR	Z,ESPSER_INITDEV1	; IF MATCH, DO IT
+	INC	C			; 8E1 = 1
+	CP	SER_DATA8 | SER_PAREVEN | SER_STOP1
+	JR	Z,ESPSER_INITDEV1	; IF MATCH, DO IT
+	INC	C			; 8O1 = 2
+	CP	SER_DATA8 | SER_PARODD | SER_STOP1
+	JR	Z,ESPSER_INITDEV1	; IF MATCH, DO IT
+	INC	C			; 7N1 = 3
+	CP	SER_DATA7 | SER_PARNONE | SER_STOP1
+	JR	Z,ESPSER_INITDEV1	; IF MATCH, DO IT
+	INC	C			; 7E1 = 4
+	CP	SER_DATA7 | SER_PAREVEN | SER_STOP1
+	JR	Z,ESPSER_INITDEV1	; IF MATCH, DO IT
+	INC	C			; 7O1 = 5
+	CP	SER_DATA7 | SER_PARODD | SER_STOP1
+	JR	Z,ESPSER_INITDEV1	; IF MATCH, DO IT
+	JR	NZ,ESPSER_INITDEV_ERR	; ELSE FAIL
+;
+ESPSER_INITDEV1:
+	; DECODE NEW BAUD RATE INTO DE:HL
+	LD	H,0
+	LD	A,D
+	AND	%00011111
+	LD	L,A
+	LD	DE,75
+	PUSH	BC			; SAVE NEW LINE MODE
+	CALL	DECODE			; DE:HL IS DECODED BAUD RATE
+	POP	BC			; RESTORE NEW LINE MODE
+	JR	NZ,ESPSER_INITDEV_ERR	; IF ERROR, FAIL
+;
+	; PROGRAM NEW LINE MODE
+	PUSH	BC
+	LD	A,ESP_CMD_SMODE
+	CALL	ESP_OUT
+	POP	BC
+	LD	A,C
+	;CALL	PRTHEXBYTE
+	;CALL	LDELAY
+	CALL	ESP_OUT
+;
+	; PROGRAM NEW BAUD RATE
+	LD	A,ESP_CMD_SBAUD
+	CALL	ESP_OUT
+	LD	A,L
+	CALL	ESP_OUT
+	LD	A,H
+	CALL	ESP_OUT
+	LD	A,E
+	CALL	ESP_OUT
+	LD	A,D
+	CALL	ESP_OUT
+;
+	; SAVE NEW LINE CONFIG WORD
+	POP	DE				; RESTORE CONFIG WORD
+	LD	(IY+ESPSER_CFG_LINE+0),E	; FIRST CONFIG BYTE
+	LD	(IY+ESPSER_CFG_LINE+1),D	; SECOND CONFIG BYTE
+;
+	XOR	A
+	RET
+;
+ESPSER_INITDEV_ERR:
+	POP	DE			; THROW AWAY CONFIG WORD ON STACK
+	OR	$FF
+	RET
+;
+;
+;
+ESPSER_QUERY:
+	LD	E,(IY+ESPSER_CFG_LINE+0)	; FIRST CONFIG BYTE TO E
+	LD	D,(IY+ESPSER_CFG_LINE+1)	; SECOND CONFIG BYTE TO D
+	LD	HL,0
+	XOR	A
+	RET
+;
+;
+;
+ESPSER_DEVICE:
+	LD	D,CIODEV_ESPSER		; D := DEVICE TYPE
+	LD	E,(IY+ESP_CFG_DEV)	; E := DEVICE NUM
+	LD	C,$00			; C := DEVICE TYPE, 0x00 IS RS-232
+	LD	H,0			; H := 0, DRIVER HAS NO MODES
+	LD	L,(IY+ESP_CFG_IO)	; L := BASE I/O ADDRESS
+	XOR	A			; SIGNAL SUCCESS
+	RET
+;
+; ESPSER CONFIGURATION
+;
+ESPSER_CFG:
+ESPSER0_CFG:
+	.DB	0				; DEVICE NUMBER (UPDATED DURING INIT)
+	.DB	ESP_0_IO			; ESP DATA PORT
+	.DB	ESP_STAT			; ESP STATUS PORT
+	.DB	ESP_0_RDY			; ESP READY BIT MASK
+	.DB	ESP_0_BUSY			; ESP BUSY BIT MASK
+	.DW	ESPSER_LINECFG			; LINE CONFIGURATION
+
+;
+ESPSER1_CFG:
+	.DB	0				; DEVICE NUMBER (UPDATED DURING INIT)
+	.DB	ESP_1_IO			; ESP DATA PORT
+	.DB	ESP_STAT			; ESP STATUS PORT
+	.DB	ESP_1_RDY			; ESP READY BIT MASK
+	.DB	ESP_1_BUSY			; ESP BUSY BIT MASK
+	.DW	ESPSER_LINECFG			; LINE CONFIGURATION
+;
+;
 ;
+ESPSER_DEVCNT	.DB	0			; ESPSER DEVICES COUNT

Source/HBIOS/hbios.asm

@@ -7390,6 +7390,7 @@ PS_SDDUART	.TEXT	"DUART$"
 PS_SDZ2U	.TEXT	"Z2U$"
 PS_SDLPT	.TEXT	"LPT$"
 PS_SDESPCON	.TEXT	"ESPCON$"
+PS_SDESPSER	.TEXT	"ESPSER$"
 ;
 ; CHARACTER SUB TYPE STRINGS
 ;

Source/HBIOS/hbios.inc

@@ -314,6 +314,7 @@ CIODEV_DUART	.EQU	$90
 CIODEV_Z2U	.EQU	$A0
 CIODEV_LPT	.EQU	$B0
 CIODEV_ESPCON	.EQU	$C0
+CIODEV_ESPSER	.EQU	$D0
 ;
 ; SUB TYPES OF CHAR DEVICES
 ;

Source/ver.inc

@@ -2,7 +2,7 @@
 #DEFINE	RMN	3
 #DEFINE	RUP	0
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.3.0-dev.43"
+#DEFINE BIOSVER	"3.3.0-dev.44"
 #define rmj	RMJ
 #define rmn	RMN
 #define rup	RUP

Source/ver.lib

@@ -3,5 +3,5 @@ rmn	equ	3
 rup	equ	0
 rtp	equ	0
 biosver	macro
-	db	"3.3.0-dev.43"
+	db	"3.3.0-dev.44"
 	endm