nfg.forums

Quote from: z964 on May 02, 2024, 03:06:17 PMThose TC511000P-10 chips are DRAM, and the YAMASHITA MCC-1 is a DRAM controller, so it's definitely a ram board.  Here's a data sheet for the ram chips: https://datasheetspdf.com/mobile/1091318/Toshiba/TC511000P-10/1

Beyond that, my searching hasn't turned up anything useful.

Thanks for that!  This is the first card I have not been able to identify.

Quote from: spectreman on Today at 05:44:33 AMKnight Arms crashes on loading screen when setting XVI system to 16MHz or 10MHz.

I would like to know from those who use HENKAN BANCHO PRO, what size of clusters do you set for formatting?

Tests carried out on the X68000 XVI, 12MB RAM (TSR brand) on HENKAN BANCHO PRO.

Same.

On my Expert with Henkan Bancho Pro and 10MB of RAM, the game is fine. On my XVI with Henkan Bancho Pro and 12MB of RAM, I get a black screen (crash) after the loading screen in either 10/16MHz mode.

Knight Arms crashes on loading screen when setting XVI system to 16MHz or 10MHz.

I would like to know from those who use HENKAN BANCHO PRO, what size of clusters do you set for formatting?

Tests carried out on the X68000 XVI, 12MB RAM (TSR brand) on HENKAN BANCHO PRO.

If the chips are 1MBit each and there's 16, that should be a 2MByte RAM board I think?

I can send you one for free if you're in the US

There are a few people selling them on ebay.

Those TC511000P-10 chips are DRAM, and the YAMASHITA MCC-1 is a DRAM controller, so it's definitely a ram board.  Here's a data sheet for the ram chips: https://datasheetspdf.com/mobile/1091318/Toshiba/TC511000P-10/1

Beyond that, my searching hasn't turned up anything useful.

I got this along with a recent Sharp X68000 ACE HD I picked up. 
I think its memory but not sure and I can't find anything about it online. 

https://imgur.com/a/IRgflpG

Any guesses?

Thanks so much!

I think you can assume that the power button pin is floating when it's not grounded.

When I recently rebuilt the PSU of FM towns tower I used Cyo's Arduino script (https://github.com/cyo-the-vile/FM-TOWNS-TOWER-POWER-SUPPLY/blob/main/TownsPSU_script.ino) as a reference. I did use a 74HC74 flip flop and NAND gates.

Quote from: Cyothevile on April 24, 2024, 12:23:00 PM

Quote from: solidpro on April 24, 2024, 02:38:17 AMI've found this mod https://nfggames.com/forum2/index.php?topic=6499.0 to turn an ATX power supply into a compatible one for the FM Towns. I wondered if, like on ATX you can ground the GREEN pin with a BLACK to auto-power-on, there is a similar pin on the FM Towns PSU....?

Here is how all towns power supplies work:

Power on signal switch goes to GND. Kicks on and off PSU with discrete logic on PSU.

Towns OS off pin goes to GND. PSU turns off.

You can wire an ATX directly to the connector on mainboard if you know the pinout which is trivial to solve. Just desolder wiring harness from dead PSU and find what pins are GND, 12v, -12V and 5V. Then wire an ATX to it. When ATX switch is turned on, the pc will turn on. Only downside is the PSU can only be controlled by ATX on and off switch, and not the towns OS OFF or original power switch.

This is all assuming you cant troubleshoot whats wrong on the original.

Trying to understand the ON/OFF logic better, so correct me if I have reached the wrong conclusion from your writeup.

The signal from the power button: a momentary grounding of the signal causes the flip flop of power ON / power OFF status of the PSU.

The signal from the OS power pin: A momentary grounding of the signal causes the power ON to go to power OFF status.

What is the voltage on the OS and power button pin prior to grounding? +12V or +5V?