; reset state : Px{DIR,REN,SEL0,SEL1,SELC,IE,IFG,IV} = 0 ; Px{IN,OUT,IES} = ?
-; PORTA usage
-SD_SEL .equ PASEL1 ; to configure UCB0
-SD_REN .equ PAREN ; to configure pullup resistors
-SD_BUS .equ 7000h ; pins P2.4 as UCB0CLK, P2.5 as UCB0SIMO & P2.6 as UCB0SOMI
-
; PORT1 usage
; P1.0 - LED2 green output low
; P1.1 - Switch S2 input with pullup resistor
-; PORT2 usage
+; PORTx default wanted state : pins as input with pullup resistor
+ BIS #1,&PADIR ; all pins 0 as input else P1.0 (LED2)
+ MOV #0FFFEh,&PAOUT ; all pins high else P1.0 (LED2)
+ SUB #2,&PAREN ; all pins 1 with pull resistors else P1.0 (LED2)
-Deep_RST_IN .equ P2IN ; TERMINAL TX pin as FORTH Deep_RST
-Deep_RST .equ 1 ; P2.0
-TERM_TXRX .equ 003h
+ .IFDEF UCA0_TERM
+; P2.0 UCA0-TXD --> USB2UART RXD
+; P2.1 UCA0-RXD <-- USB2UART TXD
+TXD .equ 1 ; P2.0 = TX + FORTH Deep_RST pin
+RXD .equ 2 ; P2.1 = RX
+TERM_BUS .equ 3
+TERM_IN .equ P2IN
TERM_SEL .equ P2SEL1
TERM_REN .equ P2REN
+ .ENDIF
-; PORTx default wanted state : pins as input with pullup resistor
+ .IFDEF UCA1_TERM
+; P2.5 UCA0-TXD --> USB2UART RXD
+; P2.6 UCA0-RXD <-- USB2UART TXD
+TXD .equ 20h ; P2.5 = TXD + FORTH Deep_RST pin
+RXD .equ 40h ; P2.6 = RXD
+TERM_BUS .equ 60h
+TERM_IN .equ P2IN
+TERM_SEL .equ P2SEL1
+TERM_REN .equ P2REN
+ .ENDIF
+
+ .IFDEF UCB0_SD
+SD_SEL .equ PASEL1 ; to configure UCB0
+SD_REN .equ PAREN ; to configure pullup resistors
+SD_BUS .equ 04C0h ; pins P2.2 as UCB0CLK, P1.6 as UCB0SIMO & P1.7 as UCB0SOMI
+ .ENDIF
- BIS #1,&PADIR ; all pins 0 as input else P1.0 (LED2)
- MOV #0FFFEh,&PAOUT ; all pins high else P1.0 (LED2)
- SUB #2,&PAREN ; all pins 1 with pull resistors else P1.0 (LED2)
; ----------------------------------------------------------------------
; POWER ON RESET AND INITIALIZATION : PORT3/4
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