ZiLOG System 8000 - Page 270

HRM
Field Contents
Zilog
ERROR DESCRIPTION FIELD
Ex pI anat ion
HRM
Soft Error, SB=x
Initialization Error
Sector Overrun
DMA Error @ <sss>oooo
Select Error
Byte/Sec Count Error
Re zero Error
Odd DMA Address
Drive Status, DS=xxxx
Pack Overflow
Power Fail Detected
Inv Pkt Cmd, CMD=xx
Hard Data Error, SB=x
Sector Not Found
Write Protect Viol.
Timeout, ES=dd
Unknown, ES=xx
ES = 0 and one or more bits in SB
is set; the low-order nibble of SB
replaces "x" (hexadecimal).
bit 0 = error correct.
bit 1 = retries att.
bit 2 = rezero req'd.
ES = 1
ES :: 2
ES = 3; The segment and offset
where the memory buffer began
replace "sss" (decimal) and
"00'00" (hex adec ima I), re s p-
ectively.
ES :: 4
ES :: 5
ES = 6
ES = 7
ES :: 8; DS replaces "xxxx"
(hexadecimal).
bit 0 = drive ready
bit 1 = on cylinder
bit 2 = seek error
bit 3 :: drive fault
bit 4 = read only
bit 5 = dual-ace. drive busy
bits 8-11 :: ports selected
bits 12-15 :: ports w/ seek end
ES = 10
ES = 11
ES = 12; the packet command opcode
replaces "xx" (hexadecimal).
ES = 13; the low nibble of SB
replaces "x" (hexadecimal). See
Soft Error above for bit definitions.
ES = 14
ES = 15
ES is 32-40; The actual ending status
code. replaces "dd" (decimal).
ES is non-zero, but not one of the
defined ending-status codes. The
A-39
Zilog
A-39