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robfinch |
; ============================================================================
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; __
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; \\__/ o\ (C) 2013-2022 Robert Finch, Waterloo
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; \ __ / All rights reserved.
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; \/_// robfinch@opencores.org
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; ||
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;
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;
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; BSD 3-Clause License
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; Redistribution and use in source and binary forms, with or without
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; modification, are permitted provided that the following conditions are met:
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;
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; 1. Redistributions of source code must retain the above copyright notice, this
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; list of conditions and the following disclaimer.
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;
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; 2. Redistributions in binary form must reproduce the above copyright notice,
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; this list of conditions and the following disclaimer in the documentation
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; and/or other materials provided with the distribution.
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;
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; 3. Neither the name of the copyright holder nor the names of its
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; contributors may be used to endorse or promote products derived from
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; this software without specific prior written permission.
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;
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; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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; DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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; FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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; SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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; CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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; OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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;
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; ============================================================================
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;
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OPT include "d:\cores2022\rf6809\software\boot\mon_equates.asm"
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OPT include "d:\cores2022\rf6809\software\boot\io_equates.asm"
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org $FFD400
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; Local RAM test routine
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; Checkerboard testing.
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; There is 70kB of local RAM
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; Does not use any RAM including no stack
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dramtest:
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ldy #$10000 ; DRAM starts here
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lda #1
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sta LEDS
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ldu #$AAA555
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swi
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fcb MF_CRLF
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dramtest1:
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deca
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bne dramtest4
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tfr y,d
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swi
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fcb MF_DisplayWordAsHex
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ldb #CR
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swi
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fcb MF_OUTCH
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dramtest4:
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stu ,y++
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cmpy #$E00000 ; DRAM ends here
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blo dramtest1
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; now readback values and compare
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ldy #$10000
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lda #1
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swi
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fcb MF_CRLF
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dramtest3:
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deca
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bne dramtest5
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tfr y,d
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swi
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fcb MF_DisplayWordAsHex
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ldb #CR
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swi
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fcb MF_OUTCH
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dramtest5:
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cmpu ,y++
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bne dramerr
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cmpy #$E00000
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blo dramtest3
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lda #2
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sta LEDS
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swi
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fcb MF_Monitor
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dramerr:
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lda #$80
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sta LEDS
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ldx #TEXTSCR
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ldb COREID
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abx
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lda #'F'
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sta ,x
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swi
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fcb MF_Monitor
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