somers@mcnc.org (Robert W. Somers) (05/31/89)
I have run into a parity error on boot-up of my vintage 6300. Not wanting to spend $120.00 / hr for genuine AT&T technical service I am hoping the net can help me with the location of the sick dram. Where is ( are ) the following locations: 0D:8000:0000:0106:0104 0D:8000:0000:010A:0108 0D:8000:0000:0100:0152 Equipment: AT&T PC6300 640Kb ram 2 360Kb drives 1 miniscribe 20Mb scribecard. Thanks in advance. ---- Robert W. Somers 919-248-1494 somers@mcnc.org MCNC, 3021 Cornwallis Rd., RTP, NC, 27709-2889
gpw@cbnewsc.ATT.COM (george.p.wilkin) (05/31/89)
From article <4580@alvin.mcnc.org>, by somers@mcnc.org (Robert W. Somers): > Where is ( are ) the following locations: > > 0D:8000:0000:0106:0104 > 0D:8000:0000:010A:0108 > 0D:8000:0000:0100:0152 I need to know the following: where is your ram and which bank holds what???? is bank 0 with 512k or is bank 1 with 512K is bank ?? with 128K ?? you're missing some info(and so am I) but here's what I know nnn KB ram fail:cc:y000:zzzz:wwww:rrrr cc= ram config 01 128K total (128K bank 0, bank 1 empty) 02 256K total (128K bank 0, 128K bank 1) 03 512K total (128K bank 0, 128K bank 1, 256K on exp board) 0? 512K total (512K bank 0) 05 640K total (128K bank 0, 128K bank 1, 384K on exp board) 0? 640K total (128K bank 0, 512K bank 1) 0D 640K total (512K bank 0, 128K bank 1) ?????????? y = bank failed 1= bank 0 128K (for 64k dram ) 2= bank 1 128K (for 64k dram ) 3= bank 0 exp 128K (for 64k dram ) 4= bank 1 exp 128K (for 64k dram ) 5= bank 2 exp 128K (for 64k dram ) ?= bank 1 row a (for 256K dram) ?= bank 1 row b (for 256K dram) 8= bank 1 row a (for 256K dram) ?= bank 1 row b (for 256K dram) 000 = segment failure zzzz = offset wwww = data written rrrr = data read Also note I think the 128K segmant map to existing ram regardless of conf. in a 640K machine with 512K in bank1 an error of 5(128K,bank 2 expansion ) would map to the last row of memory bank 1 with the proper offset added in. george -- George Wilkin AT&T Network Systems,(IH MAIN BL) 2000 N. Naperville Rd. Rm IH4A157 Naperville, IL. 60566-7033 att!ihlpf!gpw work ph# (312) 979-4317