Commodore Amiga A500 Technical Reference Manual page 239

'
'PALI~R~ PAL DESIGN SPECIFICATION
PART NO.: DESCRPT.:PAL ARBITRATE A 2 5 0 0 REV.l FRANK ULLMANN 0 5 - 2 2 - 8 6
PAL ARBITRATE FOR A 2 5 0 0 ( U
)
FOR PRODUCTION-PCB
COMMODORE BSU
M
BAS RES B C l N BR5 BR4 BR3 BR2 BR1 CND
NC BASD B W L D BC5 B C 1 B C 3 BC2 BC1 BR VCC
;
GENERATE BC1
;
HOLD UN11 L /BC
/BCOLD
=
/ B C I N
;
STORE OLD STATE OF BC
;
BR I S REQUEST TO
bSK
DESCRIPTION
BC1 I S HIGHEST P R I O R I T Y