Motorola MVME2300 Series User Manual download pdf (Page 189)

Programming Model

http://www.motorola.com/computer/literature 3-27

Table 3-10 shows a summary of the CSR. Note that the table shows only

addresses for accesses to the upper Falcon. To get the addresses for

accesses to the lower Falcon, add 4 to the address shown. Since the only

way to write to the lower Falcon’s internal register set and test SRAM is to

duplicate what is written to the upper Falcon, only the addresses shown in

the table should be used for writes to them. Writes to the external register

set are not duplicated from upper to lower, so writes to them can be via the

upper or lower Falcon.

Detailed Register Bit Descriptions

The sections following Table 3-10 describe the registers and their bits in

detail. The possible operations for each bit in the register set are as follows:

R The bit is a read-only status bit.

R/W The bit is readable and writable.

R/C The bit is cleared by writing a 1 to itself.

C The bit is readable. Writing a 0 to the bit will clear it.

The possible states of the bits after local and power-up reset are as defined

below.

P The bit is affected by power-up reset.

L The bit is affected by local reset.

X The bit is not affected by reset.

V The effect of reset on the bit is variable.

1 2 ... 184 185 186 187 188 189 190 191 192 193 194 ... 281 282

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Motorola MVME2300 Series User Manual Page 189