- #EPROM PROGRAMMER FOR C64 PROJECT HOW TO#
- #EPROM PROGRAMMER FOR C64 PROJECT GENERATOR#
- #EPROM PROGRAMMER FOR C64 PROJECT UPGRADE#
- #EPROM PROGRAMMER FOR C64 PROJECT FULL#
PLEASE HELP MARK FIXES STUFF SURVIVE: Due to “The Event” my livelihood vanished in a puff of smoke.
Finally we perform a Speed Test between an SD2IEC with and without the Epyx Fastload cartridge and see if it makes a difference! We discover that the EPROMs I was sold by AliExpress are fake chips, having been skimmed and remarked by the seller, so we find a way around that issue.
#EPROM PROGRAMMER FOR C64 PROJECT FULL#
This makes it a little more difficult to deal with as you need a larger socket and there are more pins/wires to jumper.This video is kindly sponsored by PCBWay – and we’re making an Epyx FastLoad Cartridge for the Commodore 64 8 bit microcomputer! We do a full build of the project from PCBWay, including EPROM programming with my Minipro. The 27010 is a 128Mb EPROM which is in a 32 pin package. This makes installing larger EPROMs easy to do as you only need to deal with switching in/out the extra address lines. The pinout differences between the 2764 to 27512 are not extensive, mainly extra address lines that need to be dealt with. In order to use a 2764 in place of one of these ROMS, an adapter socket is needed. The 2364 is an 8Kb PROM and is the same pinout as the 24-pin ROMS used in the original C, like 901227-0x (KERNAL in the C64) or 901229-0x (KERNAL in the 1541). The 23 are 2Kb ROM's but are not common on Commodore equipment.
#EPROM PROGRAMMER FOR C64 PROJECT GENERATOR#
The 2332 is a 4Kb PROM and is the same pinout at the 24-pin ROM used for the character generator in the C64. Apparently, you can use these in the older drives and it makes the drive more reliable as most of the and REL bugs are gone. Of the 1541-II ROM's are for use in an older 1541.
The BINARY files are raw format images (without load addresses) and the S19 files are also provided if you want to burn them and you have an EPROM programmer that supports the S19 format. The ROMs below are the latest versions for the C64's and drives.
#EPROM PROGRAMMER FOR C64 PROJECT UPGRADE#
This is especially good if you've replaced the drive kernal ROM with something else and want to verify that the upgrade worked. You will receive back the drive DOS revision. From Star Commander, select F2 (User Menu), and choose user command and send a U9.
#EPROM PROGRAMMER FOR C64 PROJECT HOW TO#
I will not attempt to document how to burn an EPROM as each programmer is unique and the instructions vary greatly. To burn an EPROM requires an EPROM programmer. You can check them on the burner to see if they are indeed erased and if not, re-erase them for 1 minute increments, checking after each erasure session until they show erased.
Typically EPROMs need about 3 minutes to erase. To erase an EPROM you will need a UV eraser. I generally go with 200-250ns as they were very common. The Commodore chip specs for the 23 PROM's show them as slow as 450ns so almost any EPROM faster than 450ns will so. The speed of the EPROM is not so critical. See here for detailed instructions on how to build one. In order to upgrade to a newer ROM revision or change the ROM to something else and use either a 2732 (for the character set) or 2764 (for kernal/DOS) EPROM, a socket adapter must be built. The ROM's in the C64 and the original 1541 models are 24 pin and are not directly pin compatible with burnable 2732 or 2764 EPROMS.