Am Sun, 26 May 2019 00:50:04 +0200 schrieb Laurent Vivier <laur...@vivier.eu>:
> On Sparc and PowerMac, the bit 0 of the address > selects the register type (control or data) and > bit 1 selects the channel (B or A). > > On m68k Macintosh, the bit 0 selects the channel and > bit 1 the register type. > > This patch introduces a new parameter (bit_swap) to > the device interface to indicate bits usage must > be swapped between registers and channels. > > For the moment all the machines use the bit 0, > but this change will be needed to emulate Quadra 800. > > Signed-off-by: Laurent Vivier <laur...@vivier.eu> > Reviewed-by: Hervé Poussineau <hpous...@reactos.org> > --- > hw/char/escc.c | 30 ++++++++++++++++++++++++------ > include/hw/char/escc.h | 1 + > 2 files changed, 25 insertions(+), 6 deletions(-) Reviewed-by: Thomas Huth <h...@tuxfamily.org>
