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<<O>> Difference Topic
5128XRAM
(r1.1 - 27 Feb 2004 - Home.synoptic)
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%META:TOPICINFO{author="synoptic" date="1077904420" format="1.0" version="1.1"}%
5128 XRAM explanation :
The 5128 chip present in OBD0 ECUs is a 2K byte(?) SRAM chip. It is mapped into memory space at 1XXX hex - any external communication(MOVX A,@DPTR) with 1000 <= DPTR < 2000h will address the SRAM chip.
see OBD0 PM6 PM7 RAM_Locations for some documentation on what is stored in XRAM. |
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