80486DX2-66/86Box-fork
1
0
Fork 0
Code Issues Pull Requests Activity

Olivetti M24 MM58174 cosmetic fixes

Browse Source
This commit is contained in:
javi-s
2022-10-30 15:36:06 +01:00
parent d06c83e25c
commit 52f700608a
1 changed files with 12 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/machine/m_xt_olivetti.c
View File

@@ -158,7 +158,7 @@ mm58174_time_set(uint8_t *regs, struct tm *tm)
regs[MM58174_DAY10] = (tm->tm_mday / 10);
regs[MM58174_MONTH1] = ((tm->tm_mon + 1) % 10);
regs[MM58174_MONTH10] = ((tm->tm_mon + 1) / 10);
/* MM87174 does not store the year, M24 uses the IRQ register to count 8 years from leap year */
/* MM58174 does not store the year, M24 uses the IRQ register to count 8 years from leap year */
regs[MM58174_IRQ] = ((tm->tm_year + 1900) % 8);
regs[MM58174_LEAPYEAR] = 8 >> ((regs[MM58174_IRQ] & 0x07) & 0x03);
}
@@ -174,7 +174,7 @@ mm58174_time_get(uint8_t *regs, struct tm *tm)
tm->tm_wday = (regs[MM58174_WEEKDAY] - 1);
tm->tm_mday = nibbles(MM58174_DAY);
tm->tm_mon = (nibbles(MM58174_MONTH) - 1);
/* MM87174AN does not store the year */
/* MM58174 does not store the year */
tm->tm_year = (1984 + (regs[MM58174_IRQ] & 0x07) - 1900);
}