Jameco-electronics Rabbit 3000 Manual de usuario descargar pdf (Pagina 295)

286 Rabbit 3000 Microprocessor

Table B-8. Write Protect High Register

Write Protect High Register (WPHR) (Address = 0x0461)

Bit(s) Value Description

0 Disable 64K write-protect for physical address 0xF0000–0xFFFFF.

1 Enable 64K write-protect for physical address 0xF0000–0xFFFFF.

0 Disable 64K write-protect for physical address 0xE0000–0xEFFFF.

1 Enable 64K write-protect for physical address 0xE0000–0xEFFFF.

0 Disable 64K write-protect for physical address 0xD0000–0xDFFFF.

1 Enable 64K write-protect for physical address 0xD0000–0xDFFFF.

0 Disable 64K write-protect for physical address 0xC0000–0xCFFFF.

1 Enable 64K write-protect for physical address 0xC0000–0xCFFFF.

0 Disable 64K write-protect for physical address 0xB0000–0xBFFFF.

1 Enable 64K write-protect for physical address 0xB0000–0xBFFFF.

0 Disable 64K write-protect for physical address 0xA0000–0xAFFFF.

1 Enable 64K write-protect for physical address 0xA0000–0xAFFFF.

0 Disable 64K write-protect for physical address 0x90000–0x9FFFF.

1 Enable 64K write-protect for physical address 0x90000–0x9FFFF.

0 Disable 64K write-protect for physical address 0x80000–0x8FFFF.

1 Enable 64K write-protect for physical address 0x80000–0x8FFFF.

Table B-9. Write Protect Segment x Register

Write Protect Segment x Register (WPSAR) (Address = 0x0480)

(WPSBR) (Address = 0x0484)

Bit(s) Value Description

7:4 These bits are reserved and should be written with all zeros.

3:0

When these four bits match bits [19:16] of the physical address, write-protect

that 64K range in 4K increments using WPSxLR and WPSxHR.

1 2 ... 290 291 292 293 294 295 296 297 298 299 300 ... 348 349

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Jameco-electronics Rabbit 3000 Manual de usuario Pagina 295