Sage II - Execution Error X

SAGE II SERVICE KIT
CPU
BOARD
CIRCUIT DESCRIPTIONS
LIST
OF STGNAL ABBREVIATIONS
KVII.OS
LIST OF SIGNAL
ABBREVIATIONS
:
A
rt*rr
OR
r!+rf
after
a
slgnatr-
name slgnifies
lnverting or
noninvertlng.
AS+
Mdress
Strobe
from
68000
A# Address
line from
68000
A#-
Buffered address llne
BAl"+ Buf
fered
Aqidress
l1ne
tr
to T/O
section
BA2+ Buf fereci
Address
.l-ine
2
to f
/
O
section
tsA3+ Buffered
Adclress
l-ine
3
to
I/
O sectlon
BT- Baud rate
tl"me chip select
(IJ10)
BRI+ Baud rate
clock
to terminal
port
ERz+
Baud rate
c.l-oclc
to
modem
porE
BE-
Buss
error
Bni/+
Suffered
data to
peripheral
chips
BR.n- Boot Rarn
l)lsable
BRI{"+
Buf f
ered
Read/Wrlte
n
read
is active high
BRW.. Buffered
Read/inlrite,
read is active low
CASIi- Cas
f,or
bank ll
CN-
Prlnter
port
chip
select
(U37)
CD- Carrier detect
from
modem
port
D8l4T1z.. Delayed I MHz
clock
DTACK- Daca Transfer Acknor./ledge
DS* Dlp switch
port
chip select
(U36)
FCz- Functlon
code
2
from
CPU
FD-
Floppy
disk control-ler chip select
(U50)
FIII+
Interrupt
dlrect fr:om floppy
disk controller
(USO)
FnI- FDC
lnterrupt
after software enable
FDIE+
Floppy
dlsk
lnterrupt
enable
FRES+ Reset
floppy
disk controller
HIrI*
IEEE 488
i-nterrupt
(U041
IiP*
IHEH
,488
i.nr-erface
chip select
(U6q)
I/o+ ffi1gh when
ln
T/O
address
space
[Ct-
Intenrupt
l!"1
to
68000
"[N-
Tnterrript lievice
chip
select
(UA;
,12*
IJnassigneo
inLerrupt on expansion
connector
i3* linessigr-*ed interrupt on expansion
connector
I,ir'{i* },oh;er byte
Write
nibble 0
Lb{X* i",o'nrer b;rf-e
Write nibble
I
i,E
fi$irr-
'i,Hll!
ena.bl e
{"ilS-f-
i,crwer
Dafla
Strobe active
high
MFM+
Sutput
fr*rn
FDC
to
selecL
double density DD=l
,YOT* Motor
Ern actl-ve
lorr
MI+ Interrupt from
Ring detect or Carrier
detec t
PCR.MP-
I,Irite
precomp
active low
I'RTY*
Farity error
signal active low
PF"L+ Parity
F,!"ag
Low
active high
(
l=parity
error)
FFll+
Parity
Flag
High active high.
RWR-
lfuite
dir
ram
buf
fer
enable,
(Permanently
enabled)
R"RD+ Read
direction ram buffer enable
ROM-
Rorn
chip select actlve
1ow
69