;**	Z-MACHINE PORT ASSIGNMENTS
;

	NOLIST
;
;		  RESTRICTED RIGHTS LEGEND
;		  ------------------------
;
;	     "Use, duplication, or disclosure by the
;	government is subject to restrictions as set forth
;	in paragraph (b) (3) (B) of the Rights in Technical
;	Data and Computer Software clause in DAR
;	7-104.9(a).  Contractor/manufacturer is Zenith
;	Data Systems Corporation of Hilltop Road, St.
;	Joseph, Michigan 49085.
;
	LIST

ZVIDEO	EQU	0D8H		;VIDEO 68A21
ZCRTC	EQU	0DCH		;VIDEO 6845 CRTC
ZLPEN	EQU	0DEH		;LIGHT PEN COUNTER
ZGDP	EQU	0E0H		;GENERAL DATA PORT (68A21)
ZTIMER	EQU	0E4H		;8253 TIMER
ZSERA	EQU	0E8H		;SERIAL A
ZSERB	EQU	0ECH		;SERIAL B
Z8259AS	EQU	0F0H		;8259A SLAVE
Z8259AM	EQU	0F2H		;8259A MASTER
ZKEYBD	EQU	0F4H		;KEYBOARD
ZTSTAT	EQU	0FBH		;TIMER STATUS
ZMCL	EQU	0FCH		;MEMORY CONTROL LATCH
ZHAL	EQU	0FDH		;HI-ADDRESS LATCH
ZPSP	EQU	0FEH		;PROCESSOR SWAP PORT
ZDIPSW	EQU	0FFH		;DIP SWITCHES

;	MEMORY CONTROL LATCH

ZMCLMS	EQU	00000011B	;MAP SELECT MASK
ZMS0	EQU	000H		; MAP SELECT 0
ZMS1	EQU	001H		; MAP SELECT 1
ZMS2	EQU	002H		; MAP SELECT 2
ZMS3	EQU	003H		; MAP SELECT 3

ZMCLRM	EQU	00001100B	;MONITOR ROM MAPPING
ZRM0	EQU	000H		; POWER UP MODE - ROM EVERYWHERE ON READS
ZRM1	EQU	004H		; ROM AT THE TOP 8K OF EVERY 64K
ZRM2	EQU	008H		; ROM AT THE TOP 8K OF THE 8088'S ADDR SPACE
ZRM3	EQU	00CH		; DISABLE ROM

ZMCLP	EQU	00110000B	;PARITY HANDLING
ZMCLPZ	EQU	00010000B	; 0=SET PARITY TO THE ZERO STATE
ZMCLPK	EQU	00100000B	; 0=DISABLE PARITY CHECKING CIRCUITRY

;	HI-ADDRESS LATCH

ZHAL85	EQU	11111111B	;8085 MASK
ZHAL88	EQU	00001111B	;8088 MASK

;	PROCESSOR SWAP PORT

ZPSPPS	EQU	10000000B	;PROCESSOR SELECT (0=8085 , 1=8088)
ZPSPPS5	EQU	000H		; SELECT 8085
ZPSPPS8	EQU	080H		; SELECT 8088
ZPSPGIS	EQU	00000010B	;GENERATE INTERRUPT ON SWAPPING
ZPSPI88	EQU	00000001B	;8088 PROCESSES ALL INTERRUPTS