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dgisselq |
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;
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; Filename: pcpc.S
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;
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; Project: Zip CPU -- a small, lightweight, RISC CPU soft core
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;
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; Purpose: A quick test of whether or not the busy command works.
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; The test does not report success or failure, so you will need
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; to observe it in a simulator to know if it worked or not.
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;
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; Creator: Dan Gisselquist, Ph.D.
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dgisselq |
; Gisselquist Technology, LLC
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dgisselq |
;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;
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; Copyright (C) 2015, Gisselquist Technology, LLC
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;
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; This program is free software (firmware): you can redistribute it and/or
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; modify it under the terms of the GNU General Public License as published
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; by the Free Software Foundation, either version 3 of the License, or (at
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; your option) any later version.
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;
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; This program is distributed in the hope that it will be useful, but WITHOUT
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; ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
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; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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; for more details.
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;
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; License: GPL, v3, as defined and found on www.gnu.org,
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; http://www.gnu.org/licenses/gpl.html
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;
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;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;
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start:
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LDI $1,R0
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MOV $1(R0),R1
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MOV $2(R0),R2
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MOV $3(R0),R3
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MOV $4(R0),R4
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MOV $5(R0),R5
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MOV $6(R0),R6
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MOV $7(R0),R7
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MOV $8(R0),R8
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MOV $9(R0),R9
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MOV $10(R0),R10
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MOV $11(R0),R11
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MOV $12(R0),R12
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MOV $13(R0),R13 ; R14 is CC, R15 is PC
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LDI $0,R0
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BUSY ; This should create an endless loop here
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; MOV R0,R0
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; MOV R0,R0
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; MOV R0,R0 ; By this point, the loop should've started
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LDI $10,R0 ; If we ever get here, we've got problems
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ADD $1(R0),R1
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ADD $2(R0),R2
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ADD $3(R0),R3
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MOV R0,R0
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MOV R0,R0 ; If we ever get here, we've got problems
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HALT
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