SD-Cart JR: A card reader cartridge for the IBM PCjr

This cartridge PCB lets you use MMC/SD cards as a removable storage medium for your PCjr.

  • Example use
  • This product
  • This product
  • This product (back)
  • Beveled PCB edge
  • Example use

Description

This product is a great alternative to floppies and can even replace a hard drive if used with the optional boot ROM.

Specifications:
  • .SYS driver for DOS
  • Experimental boot ROM available (for booting from a card)[1].
  • Full size MMC Card slot, push/push type. (card not included)
  • Activity LED
  • Read speed: 33 kB/s, Write speed: 22 kB/s.[2]
  • Quality PCB with hard-gold fingers for durability.
  • Form-factor: PCjr cartridge PCB, fits standard cartridge shells if you cut some plastic. Sold without an enclosure.

What's included:
  • Assembled PCB (without boot ROM), ready to use with sdcart.sys.
See Download(s) & Link(s) below for links to the project page, where you can get the driver, boot ROM and other tools.
[1] To use the experimental boot ROM, you must supply and program your own EPROM and install it on the PCB (preferably with a socket). When a socket is used the PCB no longer fits in a cartridge. In the future, once the boot ROM is no longer experimental (i.e. once it has been confirmed to work correctly in many situations) we will also offer this product with a pre-installed EPROM.

[2] Faster than floppies (10 kB/s). Measured by reading/writing 100kB of data using DOS and the BIOS services provided by the experimental boot ROM. Performance will be lower when using the .SYS driver if installed in the PCjr internal (slow) memory.

Ordering

This item is sold and shipped from Japan. (Unlike most of our items which are from Canada) ?

Shipping restrictions and additional delays may apply due to Covid-19. Available shipping options will be shown on the shopping cart page after you select the destination country.

Buy here

In stock : Ships within 5 business days unless noted otherwise (out of stock, pre-order, etc).
Item #SDCARTJR
DescriptionCard reader cartridge PCB for PCjr (tested and ready for use)
product picture
Price$45.00

We ship within 5 days (excluding week-ends and holidays) after payment.

Compatibility list

IMPORTANT: This is not a complete list. If your controller or game does not appear here, it simply means that we did not get the chance (or the idea) to test it, or that no one let us know that it works.

Help us improve this page by sending test results by email to support@raphnet-tech.com
Thanks!

Tested cards

Show list...
ModelTested bySupportedComments
MMC, Lexar 64 MBraphnet.Yes
SD, Panasonic 8 MBraphnet.Yes

Tested computers

Show list...
SystemTested bySupportedComments
IBM PCjrraphnet.Yes
IBM JX-Unknown / Not testedIf you test, please let us know!

Download(s) & Link(s)

DescriptionLink
Project page (English)Press here
Project page (French)Press here

Related products

Product photo
PCjr cartridge PCB for single 64K or 32K ROM, PCB Only (Set of 4)

Set of 4 PCBs for making your own cartridges for the IBM PCjr computer.

$26.99

Keywords

retro computing
pcjr
kits