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[PATCH 0/3] escc: fix R_STATUS when SDLC mode is enabled


From: Mark Cave-Ayland
Subject: [PATCH 0/3] escc: fix R_STATUS when SDLC mode is enabled
Date: Sun, 29 Aug 2021 11:01:00 +0100

Here is another small set of ESCC fixes from my attempts to boot MacOS on the 
q800
machine.

When MacOS loads the OpenTransport extension on boot it attempts to enable
SDLC mode on the ESCC. QEMU's emulation doesn't support SDLC mode, but without
these fixes the active low STATUS_SYNC bit in R_STATUS is continually
asserted causing the extension to hang on startup as it believe it is constantly
receiving LocalTalk responses during its initial negotiation phase.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>


Mark Cave-Ayland (3):
  escc: checkpatch fixes
  escc: fix R_STATUS channel reset value
  escc: fix STATUS_SYNC bit in R_STATUS register

 hw/char/escc.c | 174 ++++++++++++++++++++++++++++++-------------------
 1 file changed, 106 insertions(+), 68 deletions(-)

-- 
2.20.1




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