= AST RESEARCH, INC. TECHNICAL BULLETIN # 1008 11-7-94 = BRAVO MS P60/90 DMA DATA TRANSFER ERRORS PROBLEM: Some Bravo MS P60/90 systems may report DMA data transfer errors. CAUSE: The resistor was not giving enough time delay to Data Hold after the DMA cycle. SYSTEMS AFFECTED: AST PART NUMBER DESCRIPTION 501530-XXX MANG 5-60 501533-XXX BMS P-60 501534-XXX BMS P-90 501543-XXX ADV RMS P-60 501544-XXX ADV RMS P-90 501545-XXX ADV RMT P-60 501546-XXX ADV RMT P-90 501577-XXX PRM MX P-60 501613-XXX BMS P-90 501650-XXX BMS-L P-60 501651-XXX BMS-L P-90 501659-XXX BMS T P-60 501660-XXX BMS T P-90 501679-XXX BMS P-60 501680-XXX BMS P-90 SOLUTION: This is an informational bulletin only. If the system experiences DMA data transfer errors, upgrade the system board. See part numbers below: PARTS REQUIRED: AST REVISION PART NUMBER DESCRIPTION LEVEL 202653-001 PCBA MBD P60 8MB/1MB 256K CACHE X08 or higher 202653-002 PCBA MBD P60 16MB/2MB 256K CACHE X07 or higher 202653-003 PCBA MBD P60 8MB/0VDO 256K CACHE X05 or higher 202653-004 PCBA MBD P60 16MB/0VDO 256K CACHE X05 or higher 202653-011 PCBA MBD ARMS P60 8MB/1MB 256K X03 or higher 202653-012 PCBA MBD ARMS P60 16MB/1MB 256K X03 or higher 202653-021 PCBA MBD BMS-T P60 8MB/1MB 256K X03 or higher 202653-022 PCBA MBD BMS-T P60 16MB/1MB 256K X03 or higher 202653-031 PCBA MBD BMS P60 8MB/1MB 256K X03 or higher 202653-032 PCBA MBD BMS P60 16MB/1MB 256K X03 or higher 202653-041 PCBA MBD BMS-L P60 8MB/1MB 256K X03 or higher 202653-042 PCBA MBD BMS-L P60 16MB/1MB 256K X03 or higher 202653-051 PCBA MBD PRMMX P60 8MB/0MB 256K X03 or higher 202653-052 PCBA MBD PRMMX P60 16MB/0MB 256K X03 or higher 202653-061 PCBA MBD ARMT P60 8MB/1MB 256K X03 or higher 202653-062 PCBA MBD ARMT P60 16MB/1MB 256K X03 or higher 202653-101 PCBA MBD ASYNCH 0MB/1MB 256K CRTLRSMT X06 or higher 202653-103 PCBA MBD ASYNCH 0MB/0MB 256KC THDR X03 or higher 202653-131 PCBA MBD BMS P5A 0MB/1MB 256K X03 or higher 202653-141 PCBA MBD BMS-L P5A 0MB/1MB 256K X03 or higher 202653-151 PCBA MBD PRMMX P5A 0MB/1MB 256K X03 or higher 202653-161 PCBA MBD ARMT P5A 0MB/1MB 256K X03 or higher 202653-601 PCBA MBD ASYNCH 0MB/1MB 256K CRTLRSMT X06 or higher 202653-603 PCBA MBD ASYNCH 0MB/1MB 256K THDRSMT X03 or higher 202653-631 PCBA MBD BMS P5A 0MB/1MB 256K SMT X03 or higher 202653-651 PCBA MBD PRMMX P5A 0MB/0MB 256K SMT X03 or higher 202653-661 PCBA MBD ARMT P5A 0MB/1MB 256K SMT X03 or higher 202654-001 PCBA MBD P90 8MB/1MB 256K CACHE X06 or higher 202654-011 PCBA MBD ARMS P90 8MB/1MB 256K X03 or higher 202654-012 PCBA MBD ARMS P90 16MB/1MB 256K X03 or higher 202654-021 PCBA MBD BMS-T P90 8MB/1MB 256K X03 or higher 202654-022 PCBA MBD BMS-T P90 16MB/1MB 256K X03 or higher 202654-031 PCBA MBD BMS P90 8MB/1MB 256K X03 or higher 202654-032 PCBA MBD BMS P90 16MB/1MB 256K X03 or higher 202654-041 PCBA MBD BMS-L P90 8MB/1MB 256K X04 or higher 202654-042 PCBA MBD BMS-L P90 16MB/1MB 256K X04 or higher 202654-061 PCBA MBD ARMT P90 8MB/1MB 256K X03 or higher 202654-062 PCBA MBD ARMT P90 16MB/1MB 256K X03 or higher 202654-101 PCBA MBD ASYNCH 0MB/1MB 256KC ADV X05 or higher 202654-131 PCBA MBD BMS P54C 0MB/1MB 256K X03 or higher 202654-141 PCBA MBD BMS-L P54C 0MB/1MB 256K X04 or higher 202654-161 PCBA MBD ARMT P54C 0MB/1MB 256K X03 or higher 202654-631 PCBA MBD BMS P54C 0MB/1MB 256K SMT X03 or higher 202654-661 PCBA MBD ARMT P54C 0MB/1MB 256K SMT X03 or higher 202654-601 PCBA MBD ASYNCH 0MB/1MB 256KC SMT X05 or higher 202671-001 PCBA MBD P60 16MB/1MB 256KC PANTHR X06 or higher 202671-002 PCBA MBD P60 16MB/1MB 256K PANTHR 302 X02 or higher 202671-101 PCBA MBD P-0 0MB/1MB 256KC PANTHR X06 or higher 202671-102 PCBA MBD P-0 0MB/1MB 256K PANTHR 302 X02 or higher 202671-601 PCBA MBD P-0 0MB/1MB 256K PNTHR SMT X06 or higher 202671-602 PCBA MBD P-0 0MB/1MB 256K PANTHR 302 X02 or higher