============================================================================= AST RESEARCH, INC. TECHNICAL BULLETIN #0614 03-02-90 ============================================================================= PREVIEW I/O PARALLEL PORT ADDRESS CORRECTIONS The Preview I/O Manual (000437-001) states that jumper E9 should be used to set the board to LPT3 (I/O address 278h with another parallel port set at 3BCh). The E9 jumper is actually I/O address 378h (LPT1 or LPT2) and E10 is I/O address 278h (LPT2 or LPT3). The affected pages are 2-10 and A-5. DEBUG WITH E8 JUMPERED C:\>debug -d0:400 0000:0400 00 00 00 00 00 00 00 00-BC 03 00 00 00 00 00 00 ----- 0000:0410 31 42 FF 80 02 00 00 00-00 00 32 00 32 00 75 16 0000:0420 67 22 0D 1C 64 20 30 0B-3A 27 34 05 30 0B 30 0B 0000:0430 0D 1C 6C 26 73 1F 0D 1C-64 20 65 12 62 30 00 00 0000:0440 77 00 C0 00 00 00 00 00-00 07 50 00 00 40 00 00 0000:0450 00 0B 00 00 00 00 00 00-00 00 00 00 00 00 00 00 0000:0460 0C 0B 00 B4 03 29 20 08-04 7E 0C 00 30 A8 09 00 0000:0470 00 00 00 00 00 01 00 00-14 14 14 14 01 01 01 01 DEBUG WITH E9 JUMPERED C:\>debug -d0:400 0000:0400 00 00 00 00 00 00 00 00-78 03 00 00 00 00 00 00 ----- 0000:0410 31 42 FF 80 02 00 00 00-00 00 32 00 32 00 75 16 0000:0420 67 22 0D 1C 64 20 30 0B-3A 27 34 05 30 0B 30 0B 0000:0430 0D 1C 6C 26 73 1F 0D 1C-64 20 65 12 62 30 00 00 0000:0440 77 00 C0 00 00 00 00 00-00 07 50 00 00 40 00 00 0000:0450 00 0B 00 00 00 00 00 00-00 00 00 00 00 00 00 00 0000:0460 0C 0B 00 B4 03 29 20 08-04 7E 0C 00 30 A8 09 00 0000:0470 00 00 00 00 00 01 00 00-14 14 14 14 01 01 01 01 DEBUG WITH E10 JUMPERED C:\>debug -d0:400 0000:0400 00 00 00 00 00 00 00 00-78 02 00 00 00 00 00 00 ----- 0000:0410 31 42 FF 80 02 00 00 00-00 00 32 00 32 00 75 16 0000:0420 67 22 0D 1C 64 20 30 0B-3A 27 34 05 30 0B 30 0B 0000:0430 0D 1C 6C 26 73 1F 0D 1C-64 20 65 12 62 30 00 00 0000:0440 77 00 C0 00 00 00 00 00-00 07 50 00 00 40 00 00 0000:0450 00 0B 00 00 00 00 00 00-00 00 00 00 00 00 00 00 0000:0460 0C 0B 00 B4 03 29 20 08-04 7E 0C 00 30 A8 09 00 0000:0470 00 00 00 00 00 01 00 00-14 14 14 14 01 01 01 01