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[/] [thor/] [trunk/] [FT64/] [software/] [test/] [TestICache.asm] - Blame information for rev 44

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Line No.	Rev	Author	Line
1	44	robfinch	`; TestICache.asm - (C) 2017-2018 Robert Finch, Waterloo`
2			`;`
3			`; This file is part of FT64`
4			`;`
5			`;------------------------------------------------------------------------------`
6			`;`
7			`; system memory map`
8			`;`
9			`;`
10			`; 00000000 +----------------+`
11			`; \| \|`
12			`; \| \|`
13			`; \| \|`
14			`; \| \|`
15			`; : dram memory : 512 MB`
16			`; \| \|`
17			`; \| \|`
18			`; \| \|`
19			`; \| \|`
20			`; 20000000 +----------------+`
21			`; \| \|`
22			`; : unused :`
23			`; \| \|`
24			`; FF400000 +----------------+`
25			`; \| scratchpad \| 32 kB`
26			`; FF408000 +----------------+`
27			`; \| unused \|`
28			`; FFD00000 +----------------+`
29			`; \| \|`
30			`; : I/O area : 1.0 M`
31			`; \| \|`
32			`; FFE00000 +----------------+`
33			`; \| \|`
34			`; : unused :`
35			`; \| \|`
36			`; FFFC0000 +----------------+`
37			`; \| \|`
38			`; : boot rom :`
39			`; \| \|`
40			`; FFFFFFFF +----------------+`
41			`;`
42			`;`
43			`;`
44			`; Test I-Cache`
45			`;`
46			`org 0xFFFC0000`
47			`jmp brkrout`
48
49			`org 0xFFFC0100`
50			`start:`
51			`; Seed random number generator`
52			`ldi r6,#$FFDC0000`
53			`sh r0,$0C04[r6] ; select stream #0`
54			`ldi r1,#$88888888`
55			`sh r1,$0C08[r6] ; set initial m_z`
56			`ldi r1,#$01234567`
57			`sh r1,$0C0C[r6] ; set initial m_w`
58			`.st4:`
59			`; Get a random number`
60			`sh r0,$FFDC0C04 ; set the stream`
61			`nop ; delay a wee bit`
62			`lhu r1,$FFDC0C00 ; get a number`
63			`sh r0,$FFDC0C00 ; generate next number`
64
65			`; convert to random address`
66			`shl r1,r1,#2`
67			`and r1,r1,#$3FFC`
68			`add r1,r1,#$FF400000 ; scratchram address`
69
70			`; Fill an area with test code`
71			`ldi r2,#15 ; number of ops - 1`
72			`ldi r3,#.st2`
73			`.st3:`
74			`lhu r4,[r3+r2*4]`
75			`sh r4,[r1+r2*4]`
76			`sub r2,r2,#1`
77			`bge .st3`
78
79			`; Jump to the test code`
80			`jal r29,[r1]`
81			`ldi r2,#14`
82			`cmp r1,r1,r2`
83			`bne r1,r0,.st5`
84			`bra .st4`
85
86			`; Display fail code`
87			`.st5:`
88			`ldi r1,#$FA`
89			`sb r1,$FFDC0600`
90			`bra .st5`
91
92			`; Test code accumulates for 16 instructions, sum should be 14`
93
94			`.st2:`
95			`ldi r1,#0`
96			`add r1,r1,#1`
97			`add r1,r1,#1`
98			`add r1,r1,#1`
99			`add r1,r1,#1`
100			`add r1,r1,#1`
101			`add r1,r1,#1`
102			`add r1,r1,#1`
103			`add r1,r1,#1`
104			`add r1,r1,#1`
105			`add r1,r1,#1`
106			`add r1,r1,#1`
107			`add r1,r1,#1`
108			`add r1,r1,#1`
109			`add r1,r1,#1`
110			`ret`
111
112			`brkrout:`
113			`rti`

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[/] [thor/] [trunk/] [FT64/] [software/] [test/] [TestICache.asm] - Blame information for rev 44