RCA RMB-167 manual Alternate GAL Equations, U2 Equations, 1 U1 Equations For Eprom In Low Memory

Page 20

6.1.2	U2 Equations
; U2	Memory Decode Logic
;----------------- PIN Declarations ---------------
; --- inputs ---
PIN	1	A0	COMBINATORIAL ;
PIN	2	A14	COMBINATORIAL ;
PIN	3	A15	COMBINATORIAL ;
PIN	4	A16	COMBINATORIAL ;
PIN	5	A17	COMBINATORIAL ;
PIN	6	BHE_	COMBINATORIAL ;
PIN	7	MON	COMBINATORIAL ;
PIN	8	HISEG	COMBINATORIAL ;
PIN	9	RESET	COMBINATORIAL ;
PIN 11		AUX0	COMBINATORIAL ;
PIN 19		AUX1	COMBINATORIAL ;
; --- outputs ---
PIN	12	RAMSELL_	COMBINATORIAL ;
PIN	13	RAMSELH_	COMBINATORIAL ;
PIN	14	ROMSEL_	COMBINATORIAL ;
PIN	15	MA14	COMBINATORIAL ;
PIN	16	MA15	COMBINATORIAL ;
PIN	17	MA16	COMBINATORIAL ;
PIN	18	MA17	COMBINATORIAL ;
;----------------- Boolean Equation Segment ------
EQUATIONS
RAMSELL_ =		A0
RAMSELH_ =		BHE_
ROMSEL_ =		1
MA14	=	A14
MA15	=	A15
MA16	=	0
MA17	=	0

6.2Alternate GAL Equations

6.2.1U1 Equations For EPROM In Low Memory

;PALASM Design Description

; EPROM/RAM selected by CFG0 and CFG1

;

;

; jumper at		low 32K	high 32K
; -----------		-------	--------
;	NONE	RAM	RAM
;	CFG0	EPROM	RAM
;	CFG1	RAM	EPROM
;CFG0 and CFG1		EPROM	EPROM
; --- Declaration Segment			----------------------------
TITLE	RMB-167 Memory Decode Logic -- RAM/EPROM
PATTERN
REVISION
AUTHOR
			-14-

Image 20

Contents USER’S Guide Page Page Warranty Table Of Contents 10.1.1 Hardware READS166 Evaluation Software OverviewParts List Software Installation, READS166 SoftwareSystem Requirements Third Party SoftwareConnections, Jumper Settings START-UPSoftware Initialization Serial NumberBootstrapping Verifying that the Monitor is Loaded A D S C O M M a N D STroubleshooting Hardware Set-upSoftware Set-up PC set-upPower Operating NotesSerial port Jumper SelectionMemory Options RAM Memory OptionsEprom Memory Options Alternate Memory Map with Eprom in Low MemoryMoving RMON167 to Eprom Eprom CFG1Rstisr Syscon is 89h on the 167 dw 089E6h Dw 0F800h Nop Mov 1 U1 Equations Default GAL EquationsGAL Equations 1 U1 Equations For Eprom In Low Memory Alternate GAL EquationsU2 Equations 2 U2 Equations For Eprom In Low Memory Equations JP6 System Header Signal Pins SignalHeaders and Jumpers System and I / O HeadersJP7 Input/Output Header Signal 166 JP2 JP7Signal RMB-167 JP8 Extra Input/Output Header of the RMB-167 SignalPins Analog-to-Digital Converter Reference Jumpers Bootstrapping S0RIRDiswdt Einit Mov R1, #0A55Ah Minimal Monitor Port Configuration MON167 MonitorDownload HEX file HelpPort Data Word MemoryREADS166 Version READS166 V3.00 ConceptsModule Executable ProjectsArchive Projects Circuit Diagrams