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A ROM device cannot be programmed by a user. Such devices are mask-programmed by the manufacturer and you have to buy a large amount of them (>10k..100k). In this case you have to send the manufacturer a HEX-file with the content you wish to have inside your ROM.
But perhaps you mean PROM/EPROM/FLASH devices? These ones can be programmed by the user using different kind of chip-programmers.
which EEPROM do yu want to program? Is it a 'real' EEPROM (byte-eraseable) or is it a FLASH? If you have a suggested type or application this could help.
don't need to worry a lot u have burners for that with corresponding software. u can view the hex code on the software and then u can program the ROM. secondly the ROM will be attached to some device say an intel or motorola processor. if u are writing code for that then pass the code through corresponding assembler or compiler creating hex file. this will be then loaded/ programmed in the ROM the software used by the burner/programmer, only u will have to load the hex file
I think you'd like to program these devices inside your circuit i.e. from a microcontroller. If this is the case, I'd look to use FLASH devices, because most of them don't need a special program timing like EPROM's do. A FLASH device can be accessed (for programming) as a simple memory. There also exist FLASH devices which won't need a higher programming voltage (look at AMD 29Fxxx family or 29LVxxx). To program a FLASH you have to write to special registers inside the chip. Look at the datasheet, you will also find flowcharts. Most manufacturers also offers assembly or C-code at their homepage which does the programming.
do you know if there is a cheap programmer for 29lv of tsop56? i have here 2 flashes and i need to program it but in order to buy a expensive programmer for only 2 flashes is not worth the effort!
It depend on what chip are you using. Most programmer support popular chip with a DIp socket. with other packaged you need a adapter. If you like a programmer but it doesn't sopport your chip, send them a chip and a spec sheet, they will be happy to develop the library for you. I used Xeltec programmer 10 years ago and they are very supportive https://www.xeltek.com/
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