Parity error machine check occurred, or data miscompare happened during CORE I/O ASIC register testing including Ethernet DMA Ptr, awaiting user input at SROM> prompt. The manual's first action is: “System module”
- Model
- Digital Equipment Corporation DEC 3000 Model 300 Series AXP
- Display shows
- Machine check. Awaiting user input at the SROM> prompt. (20)
- Type
- Error code
- Source
- Manual p. 40
What 20 means
Machine check. Awaiting user input at the SROM> prompt. p. 51
Common causes
- Send machine check (MCHK) dump to SRON port. Parity error machine check occurred. p. 51
- Data miscompare when testing one of the following CORE I/O ASIC registers: p. 51
- Ethernet DMA Ptr p. 51
- Serial Comm Xmt DMA Ptr p. 51
- DMA Ptr p. 51
- Serial Comm Rev p. 51
- Printer Xmt Port DMA p. 51
- Printer Rev Port DMA Ptr p. 51
- ISDN Xmt DMA Ptr p. 51
- ISDN DMA Buffer Ptr p. 51
- ISDN Data Xmt Register p. 51
- ISDN Data Rev Register p. 51
- ISDN Rev Ptr p. 51
- ISDN Rev DMA Buffer Ptr p. 51
- System data buffers 0-3 p. 51
- System interrupt Mask Register p. 51
- System module p. 51
- ILSC load-locked/store-conditional failure p. 51
- LANCE register address port R/W error p. 51
What to do
Before you service the product, read the safety instructions in the manual p. 12.
If 20 is still not resolved
The manual gives no further instruction for this code. Open the code table in the PDF or contact Digital Equipment Corporation service.
This page summarises what the manufacturer’s manual says about 20; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Digital Equipment Corporation. Found a mistake? Report an error.