David Cook
Well-known member
I just received a computer with a High Resolution Video Card. This unaccelerated card supports 512x384 and 640x480 modes (and maybe some weird modes with the right monitors and software?). According to Apple, this card had two model numbers: M0322 (630-4222) for 4-bit color, M0324 (630-4230) for 8-bit color. Sadly, my poor card has 8 empty DIP sockets; meaning it is the 4-bit card capable of displaying only 16 colors!
![Empty-Video-RAM-Sockets-on-Apple-High-Resolution-Video-Card.jpg Empty-Video-RAM-Sockets-on-Apple-High-Resolution-Video-Card.jpg](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53920-3515ea543f2563b6e4c64404f9fb5c1a.jpg)
Wow!
Sometimes I buy an old Mac for the computer, sometimes I buy it for the video card. To avoid hurting the video card's feelings, let's just say I love the card and computer equally.
The back of the PCB has the number 820-0185-08. The ROM is 341-0660.
![High-Resolution-Video-Card-EPROM-341-0660.jpg High-Resolution-Video-Card-EPROM-341-0660.jpg](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53922-d3b4521b8fceab7a4c75932461924c8b.jpg)
The leaky caps were just starting to damage the card. I replaced the capacitors, tinned bare traces, reheated nearby solder joints and vias. You can see some discoloration and solder mask removal in the image below. Fortunately, no traces needed repairs. If you have one of these cards, please recap it before it is too late.
![Recap-to-avoid-additional-damage.jpg Recap-to-avoid-additional-damage.jpg](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53923-5096cdc58eca40d0883252b3818d15a1.jpg)
For no good reason, I decided to upgrade the memory on the card. I just couldn't stand to see such wasted potential in the unfulfilled sockets. I ordered new NEC D41264C-12 dual port video DRAM chips from eBay for about $10.
![NEC-D41264C-12-Dual-Port-Video-DRAM.jpg NEC-D41264C-12-Dual-Port-Video-DRAM.jpg](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53925-35ea63f64c4e98a7f88e762620c69167.jpg)
Make sure to install the chips with the notch facing down, not up.
![Install-VRAM-With-Notch-Facing-Down.jpg Install-VRAM-With-Notch-Facing-Down.jpg](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53926-cef243c403eac83aa606bf94e001e048.jpg)
Double rainbow!
![Wow-256-Colors.PNG Wow-256-Colors.PNG](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53927-06723b702ef62e9e7f616dbcb89d66b8.jpg)
This isn't a particularly speedy card. But, it is period appropriate for a number of old Macs.
![High-Res-Video-Card-Isnt-Speedy.PNG High-Res-Video-Card-Isnt-Speedy.PNG](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53928-f3871d4bd069b1ac9a0387a8280c1c0f.jpg)
- David
![Empty-Video-RAM-Sockets-on-Apple-High-Resolution-Video-Card.jpg Empty-Video-RAM-Sockets-on-Apple-High-Resolution-Video-Card.jpg](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53920-3515ea543f2563b6e4c64404f9fb5c1a.jpg)
![Wow-16-Colors.PNG Wow-16-Colors.PNG](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53921-0f1ef569e5b2193a02a4927c5ad877fb.jpg)
Sometimes I buy an old Mac for the computer, sometimes I buy it for the video card. To avoid hurting the video card's feelings, let's just say I love the card and computer equally.
The back of the PCB has the number 820-0185-08. The ROM is 341-0660.
![High-Resolution-Video-Card-EPROM-341-0660.jpg High-Resolution-Video-Card-EPROM-341-0660.jpg](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53922-d3b4521b8fceab7a4c75932461924c8b.jpg)
The leaky caps were just starting to damage the card. I replaced the capacitors, tinned bare traces, reheated nearby solder joints and vias. You can see some discoloration and solder mask removal in the image below. Fortunately, no traces needed repairs. If you have one of these cards, please recap it before it is too late.
![Recap-to-avoid-additional-damage.jpg Recap-to-avoid-additional-damage.jpg](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53923-5096cdc58eca40d0883252b3818d15a1.jpg)
For no good reason, I decided to upgrade the memory on the card. I just couldn't stand to see such wasted potential in the unfulfilled sockets. I ordered new NEC D41264C-12 dual port video DRAM chips from eBay for about $10.
![NEC-D41264C-12-Dual-Port-Video-DRAM.jpg NEC-D41264C-12-Dual-Port-Video-DRAM.jpg](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53925-35ea63f64c4e98a7f88e762620c69167.jpg)
Make sure to install the chips with the notch facing down, not up.
![Install-VRAM-With-Notch-Facing-Down.jpg Install-VRAM-With-Notch-Facing-Down.jpg](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53926-cef243c403eac83aa606bf94e001e048.jpg)
Double rainbow!
![Wow-256-Colors.PNG Wow-256-Colors.PNG](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53927-06723b702ef62e9e7f616dbcb89d66b8.jpg)
This isn't a particularly speedy card. But, it is period appropriate for a number of old Macs.
![High-Res-Video-Card-Isnt-Speedy.PNG High-Res-Video-Card-Isnt-Speedy.PNG](https://forumbucket.us-southeast-1.linodeobjects.com/data/attachments/53/53928-f3871d4bd069b1ac9a0387a8280c1c0f.jpg)
- David