Sharp MZ

EN:
Yes the 5V comes from the CGROM

FR:
Oui le 5V vient de la CGROM

EN: Hello, Here is a small map to have a programmable character generator (PCG) that can get 4 graphic plans of 4 sets of 256 characters, a total of 4096 characters. It can display 4 screens of 320x200 pixels and 8 colors in blocks of 8x8 bits. It connects to the backplane directly. ;) I will soon p...

EN: Hello, Here's a small expansion card for a Sharp MZ-700 backplane. It measures 10cm x 10cm, double sided and can hold 3 cards. I will publish the KiCAD plans soon. FR: Bonjour, Voici une petite carte d'extension permettant d'avoir un fond de panier pour Sharp MZ-700. Elle mesure 10cm x 10cm, dou...

Hello,
I am possibly interested in the 700 PCG.
You sell it at what price?

Yes I use it for my PCB and it fits perfectly in the connector of Sharp MZ-700.
The 90 ° ebay connector works because I have it too.

This connector works for Sharp MZ-700.
I ordered them here:

https://fr.aliexpress.com/item/50-Pcs-2 ... 21421.html

in 2x25p in 50 pieces

Is the left electronic board of the first picture (the green PCB) the QD interface?
It looks like it has exactly the same components: LS00, LS02 and LS244.

To know it would require detailed photos of the double-sided circuit to see what address is used by this card.

Hi,

The electronic board is more like an 8-bit output data buffer (74LS244) associated with address decoding (74LS00 and 74LS02).
There is no EPROM so no software to work.

On the SFD700 version 2, it was enough to put the IPLPRO chain in the first sector of the first track at the 0 offset of the disk to boot. Maybe it's a similar case here.
See assembler listing: viewtopic.php?f=6&t=184 address $F450 line 954 and following