ACEErr enum<uint16> {
  aceNoError = $0,
  aceIsActive = $1d01,
  aceBadDP = $1d02,
  aceNotActive = $1d03,
  aceNoSuchParam = $1d04,
  aceBadMethod = $1d05,
  aceBadSrc = $1d06,
  aceBadDest = $1d07,
  aceDataOverlap = $1d08,
  aceNotImplemented = $1dff,
}

ACEBootInit() {
  $1d, $01
}
ACEStartUp(dPageAddr: int16) {
  $1d, $02
}
ACEShutDown() {
  $1d, $03
}
ACEVersion(): int16 {
  $1d, $04
}
ACEReset() {
  $1d, $05
}
ACEStatus(): bool {
  $1d, $06
}
ACEInfo(infoItemCode: int16): int32 {
  $1d, $07
}
ACECompBegin() {
  $1d, $0b
}
ACECompress(src: Handle, srcOffset: int32, dest: Handle, destOffset: int32,
  nBlks: int16, method: int16) {
  $1d, $09
}
ACEExpand(src: Handle, srcOffset: int32, dest: Handle, destOffset: int32,
  nBlks: int16, method: int16) {
  $1d, $0a
}
ACEExpBegin() {
  $1d, $0c
}