salfter/greaseweazle-firmware
1
0
Fork 0
mirror of https://github.com/keirf/greaseweazle-firmware.git synced 2025-10-31 11:06:44 -07:00
Code Issues Packages Projects Releases Wiki Activity

edsk: Plumb through "missing IDAM" and "bad ID CRC" error types

Browse Source
This commit is contained in:
Keir Fraser
2021-02-28 13:59:37 +00:00
parent 4900f707de
commit 67f93aeb5f
1 changed files with 6 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
scripts/greaseweazle/image/edsk.py
View File

@@ -195,18 +195,17 @@ class EDSK(Image):
# IDAM
t += mfm.encode(bytes(track.gap_presync))
t += mfm.sync_bytes
idam = bytes([0xa1, 0xa1, 0xa1, mfm.IBM_MFM.IDAM,
c, h, r, n])
idam += struct.pack('>H', mfm.crc16.new(idam).crcValue)
t += mfm.encode(idam[3:])
am = bytes([0xa1, 0xa1, 0xa1, imark, c, h, r, n])
am += struct.pack('>H', mfm.crc16.new(am).crcValue^icrc)
t += mfm.encode(am[3:])
t += mfm.encode(bytes([track.gapbyte] * track.gap_2))
# DAM
t += mfm.encode(bytes(track.gap_presync))
t += mfm.sync_bytes
track.weak += [((s+len(t)//2+4)*16, n*16) for s,n in weak]
dam = bytes([0xa1, 0xa1, 0xa1, dmark]) + sec_data
dam += struct.pack('>H', mfm.crc16.new(dam).crcValue^dcrc)
t += mfm.encode(dam[3:])
am = bytes([0xa1, 0xa1, 0xa1, dmark]) + sec_data
am += struct.pack('>H', mfm.crc16.new(am).crcValue^dcrc)
t += mfm.encode(am[3:])
t += mfm.encode(bytes([track.gapbyte] * gap_3))
# Some EDSK images have bogus GAP3 values. If the track is too