Fill rom in eprom programmer
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FILL ROM IN EPROM PROGRAMMER HOW TO
Are those programs available to download or do I have to write them myself? I have no idea how to write programs and I don’t think it’s something I want to try to learn. I understand there are other programs written to check other things on a board. What is the most common size for pinball games? Looks like the difference in EPROMS is the memory size. Why are there different programming voltages and which voltage are you suppose to use? I checked Marco and they seem expensive (3.00 each). I’m learning:ĮEPROMS = erasable with burner (no UV needed) This seems like the best option. Thanks zacaj, you answered a bunch of questions I had. Would a wall-wart work? What voltage do I need? Those of you who have used the GQ-4x, what are you using?
FILL ROM IN EPROM PROGRAMMER MANUAL
The manual doesn’t say what to use for external power. The way I understand it a powered USB port should work but an external power supply would be like a backup in case the USB is not enough power. I read the GQ-4X manual and it doesn’t say much about the power supply. And I don’t see me needing multiple machines to burn only pinball game ROMs. Thanks passave, I’m hopping not to break the bank on this adventure. I’m sure I’ll have more questions as I go along. Is there a place to download programs? How long does it usually take to burn a set for a game? If it don’t work I won’t know if it’s the ROM, the programmer, or me. Can you erase the non-window type? Or is that a one time use only? Where do you get your chips? How many should I have on hand? Not sure I want cheap ROM’s. I understand the window top needs a UV oven to erase them. There are also some with a window on top – some without. Seems like they vary in memory size but the same physical size. There are tons of different Eproms out there for the Stern / Bally boards. Some programmers come with additional adaptors but I don’t think I’ll need the extra stuff just to burn Bally / Stern ROMs. Do you use an external supply? What do I need for external power supply? Is it easy to program? Out of 10 tries how many come out good? – How many junk? Some say it needs an external power supply. :Įbay.com link: GQ PRG 055 GQ 4X V4 GQ 4X4 EPROM chip Burner USB Universal Programmer 29F400 I’ve read several posts about Eprom Burners and the ‘go to’ programmer looks like the GQ-4x4.
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Can the ROMS be fully tested on the bench – without the game? I thought about selling a couple but I would want it to have the proper ROMs for the buyers game. I have accumulated a few Bally and Stern MPU boards. I’m going to need a lot of help if I get into this. And I don’t know the first thing about programming them. I’ve had a few replacements made by a person on here when I needed them. For example, your loop should work.I don’t have an eprom burner. In this configuration you'll be able to do certain limited tests. IOW, when the processor asks for the lower 32K it gets ROM, and when it asks for the upper 32K it gets ROM. Your present arrangement lacks any connection from A15, and the ROM (because its CE and OE are always low) is active whether A15 is high or low. The ROM (also with an internal universe of only 32K) is active only when the processor outputs addresses $8000 to $FFFF - ie, addresses with A15 = 1. Thus the RAM (whose own internal universe is just 32K) is only active when the processor outputs addresses 0 to $7FFF - ie, addresses with A15 = 0. Likewise, when A15 is high it would be ROM that gets activated instead. And somehow (there are various ways of arranging this) A15 of the processor would, when low, activate the RAM (via its CE, OE and WE). One common arrangement - a typical system - is when the processor sees RAM in the bottom 32K and ROM (or EPROM or EEPROM) in the top 32K.Ī0-A14 (from the processor) would attach to A0-A14 of both the RAM and the ROM.