Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-10-05 08:41:31 +03:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

z80sio: Ignore "Send Abort" command when not in SDLC mode (unbreaks jade)

Browse Source
This commit is contained in:
AJR 2018-08-25 18:47:36 -04:00
parent aea16dafbb
commit 641ad4e434
1 changed files with 15 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
src/devices/machine/z80sio.cpp
View File

@ -1447,15 +1447,22 @@ void z80sio_channel::do_sioreg_wr0(uint8_t data)
LOGCMD("%s Ch:%c : Null command\n", FUNCNAME, 'A' + m_index);
break;
case WR0_SEND_ABORT:
LOGCMD("%s Ch:%c : Send abort command\n", FUNCNAME, 'A' + m_index);
// TODO: what actually happens if you try this in a mode other than SDLC?
// FIXME: how does this interact with interrupts?
// For now assume it behaves like automatically sending CRC and generates a transmit interrupt when a new frame can be sent.
tx_setup(0xff, 8, 0, true, true);
m_rr0 |= RR0_TX_BUFFER_EMPTY;
m_rr1 &= ~RR1_ALL_SENT;
if ((m_wr1 & WR1_WRDY_ENABLE) && !(m_wr1 & WR1_WRDY_ON_RX_TX))
set_ready(false);
if ((m_wr4 & (WR4_STOP_BITS_MASK | WR4_SYNC_MODE_MASK)) != (WR4_STOP_BITS_SYNC | WR4_SYNC_MODE_SDLC))
{
LOGCMD("%s Ch:%c : Send abort command (not in SDLC mode, ignored)\n", FUNCNAME, 'A' + m_index);
}
else
{
LOGCMD("%s Ch:%c : Send abort command\n", FUNCNAME, 'A' + m_index);
// FIXME: how does this interact with interrupts?
// For now assume it behaves like automatically sending CRC and generates a transmit interrupt when a new frame can be sent.
tx_setup(0xff, 8, 0, true, true);
m_rr0 |= RR0_TX_BUFFER_EMPTY;
m_rr1 &= ~RR1_ALL_SENT;
if ((m_wr1 & WR1_WRDY_ENABLE) && !(m_wr1 & WR1_WRDY_ON_RX_TX))
set_ready(false);
}
break;
case WR0_RESET_EXT_STATUS:
reset_ext_status();