Table 3-20. Address Lists For Different Block Size Checks - Motorola MVME5100 Programmer's Reference Manual

Table 3-20. Address Lists for Different Block Size Checks

512MB
(64Mx4)
$00000000 $00000000
$00008000 $00004000
$10000000 $08000000
64MB 64MB
2
(8Mx16) (8Mx8)
$00000000 $00000000
$00002000 $00002000
Notes 1. 16Mx8 and 16Mx4 are the same. If the real size is either
3. Wait enough time to allow at least 1 SDRAM refresh to occur before
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256MB 256MB
(32Mx8) (32Mx4)
$00000000
$00008000
32MB
2 3
(4Mx16)
$00000000
$00001000
one of these, this algorithm will program for 16Mx8
regardless of whether the SDRAM size is 16Mx8 or 16Mx4.
This is not a problem because the Hawk behaves identically
when programmed for either size.
2. 8Mx16 and 8Mx8 are the same. The same idea that applies
to 16Mx8 and 16Mx4 applies to them.
3. This needed only to check for non-zero size.
beginning any SDRAM accesses.
Software Considerations
128MB 128MB
(16Mx16) (16Mx8)
$00000000 $00000000
$04000000 $00004000
128MB
1 1
(16Mx4)
$00000000
$00004000
3-85
3