Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-22 16:31:49 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

machine/jvsdev.cpp: Fixed chaining resets, and always cascade broadcast messages to slave devices. (#10582)

Browse Source
This commit is contained in:
987123879113 2022-11-23 23:46:04 +09:00 committed by GitHub
parent 60f7688d7b
commit cfba0af15c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/devices/machine/jvsdev.cpp
View File

@ -73,12 +73,18 @@ void jvs_device::message(uint8_t dest, const uint8_t *send_buffer, uint32_t send
} else
s += len;
}
recv_size = d - recv_buffer;
// d will always have at least a 1 byte difference due to adding the status code byte before processing messages.
// Don't count the status code in the received message size unless we're at the end of the device chain so the
// message buffer can be chained to slave devices. Required for resets to be chained.
const uint32_t new_recv_size = d - recv_buffer;
if (!next_device || new_recv_size > 1)
recv_size = new_recv_size;
}
// Pass along the message if the device hasn't replied
// Should we cumulate answers instead?
if(next_device && !recv_size)
if(next_device && (dest == 0xff || !recv_size))
next_device->message(dest, send_buffer, send_size, recv_buffer, recv_size);
}