HP C737990900 - Manual (Page 163)

Commands 163
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Main Processor
Memory:
Not all the Processor Memory space is accessible. The following table shows
valid address segments:
SCSI Burst Buffer: The buffer is 192 Kb, that is, addresses from 00000h through 30000h.
PCA EEPROM: The write range is limited to 100h bytes, starting at 100h.
Start Address End Address Size Description
180000h 1BFFFFh 256 KB max. External SRAM (if fitted)
200000h 23FFFFh 256 KB Formatter ASIC
240000h 27FFFFh 256 KB Servo Controller ASIC
280000h 29FFFFh 128 KB Whitewater ASIC (minus buffer)
FF80000h FFEFFFh 28 KB Main memory internal SRAM