06852: drifto94, twineag2, stmblade, snes [f1roc2, moritash]: uPD96050 on-chip RAM doesn't save at emulator exit

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06852	Misc.	Minor	Always	Jan 22, 2018, 01:14	Jan 22, 2018, 04:26

Tester	Kale	View Status	Public	Platform	MAME (Self-compiled)
Assigned To		Resolution	Open	OS	Windows Vista/7/8 (64-bit)
Status [?]	Confirmed			Driver	seta/ssv.cpp
Version	0.193	Fixed in Version		Build	64-bit
		Fixed in Git Commit		Github Pull Request #

Summary	06852: drifto94, twineag2, stmblade, snes [f1roc2, moritash]: uPD96050 on-chip RAM doesn't save at emulator exit
Description	uPD96050 CPU (aka ST010 or ST011) is supposed to have a battery backed RAM for data saving. Examples: Twin Eagle 2 uses it for bokkeeping info in service mode while F1 ROC II for Super NES saves three games and time attack records in main menu.
Steps To Reproduce	Twin Eagle 2: 1. enable service mode in dip-switch menu; 2. select i/o test; 3. press 1p button 1 & 3 together twice; 4. check bookkeeping menu items; 5. Quit emulator or hard-reset then repeat steps 2-4, notice that data isn't saved; SNES [f1roc2] 1. in main menu, select grand prix; 2. select one of the three slots, insert a name and select the newly created save; 3. select "save game" then save on the created slot; 4. select no at continue game query; 5. Quit emulator or hard-reset, repeat step 1 and notice that your data is wiped.
Additional Information	src\devices\cpu\upd7725\upd7725.h: dataRAM variable is supposed to be the on chip RAM. I have no idea at current time if software list games can handle this properly if you inherit device_nvram_interface class for the CPU core.
Github Commit

Flags
Regression Version
Affected Sets / Systems	drifto94, twineag2, stmblade, snes [f1roc2, moritash]

Attached Files

No.14675 NekoEd Senior Tester Jan 22, 2018, 04:26	Confirmed in twineag2. Selecting the I/O test isn't necessary, you can go straight to the bookkeeping menu item instead.