music.pnx

来自「用CPLD做音乐发生器」· PNX 代码 · 共 19 行

<?xml version='1.0' encoding='utf-8' ?>
<!DOCTYPE ibis [
<!ELEMENT ibis (part, pin+)>
<!ELEMENT part EMPTY>
<!ELEMENT pin EMPTY>
<!ATTLIST part
  arch   CDATA #REQUIRED
  device CDATA #REQUIRED
  spg    CDATA #REQUIRED
  pkg    CDATA #REQUIRED>
<!ATTLIST pin
  nm     CDATA #REQUIRED
  no     CDATA #REQUIRED
  iostd  (TTL|LVTTL|LVCMOS2|NA) "NA"
  sr     (SLOW|FAST|slow|fast) "SLOW"
  dir    (BIDIR|bidir|INPUT|input|OUTPUT|output) "BIDIR">
]>
<ibis><part pkg="PC84" spg="-7" arch="xc9500" device="XC95108"/><pin nm="enable1" no="17" dir="input"/><pin nm="enable2" no="18" dir="input"/><pin nm="inclk" no="9" dir="input"/><pin nm="spk" no="19" sr="fast" dir="output"/></ibis>