Category: Commodore 16

SD2IEC PCB arrived

Jeroen Leave a comment

2 weeks ago I designed a PCB for my SD2IEC.
Last Friday I received them in my mailbox.

I took the schematics of ShadowWolf and used the online design tools on www.easyeda.com to draw the schematics and design the PCB.

The result is found here and I ordered an prototype ($10,- with shipping).
The SD2IEC uses a micro SD module with build in voltage converter.
The only signals missing from the SD module are Card_Detect and Write_Protect.

I routed those signals to a dip switch so I can still control these signals.
The Card_Detect signal is also routed to the SD module header, so I can modify the SD module to add this signal.

If this proto type works, I will be updating the PCB with RTC and LCD, and will move the micro SD to the main PCB.

 

New Commodore added to my collection

Jeroen Leave a comment

last month I got a Commodore 16 and bought a Toshiba HC10 (MSX) system.

The Commodore 16 has the same basic architecture like the Plus 4, but misses the 3-1 function ROM, user port and (6551) ACIA serial port chip.
It also has 16Kb of RAM instead of the 64Kb that the Plus 4 has.
The circuit difference of the RAM is only minor and can be quickly modified by supplying the A14 and A15 lines to the multiplexer and changing the RAM chips.
So this will be my first mod (keep you posted).

The Toshiba HC10 I bought is a MSX system. I bought it with two game cartridges and a Philips floppy drive controller cartridge.
Also a (DIY) external drive and monitor was supplied.
I bought it to play a little with the “different technique” MSX is using.
I will probably sell the system when I’m done playing.