+KylJoy Posted October 21, 2015 Share Posted October 21, 2015 I am trying to get the Intellivision II Exec so I can test some things in jzintv, etc. Can someone give me a CLUE how to go about dumping it from one of my kabillion (OK, three) physical Intellivision II systems I have laying over here? Thanks! Quote Link to comment Share on other sites More sharing options...
Games For Your Intellivision Posted October 21, 2015 Share Posted October 21, 2015 Essentially, you have to build your own rom dumper. Here is some information posted below. We built custom hardware to dump the GROM and EXEC back in the 90s (The same images that were released on Intellivision Lives!) We plugged the ECS into the dumper to get the ECS EXEC. I think that we even got some of the Intellivoice rom the same way if I recall correctly. I don't think we did the Intellivision II Exec however. Obviously, our dumper is now obsolete as the parallel port was used to interface the dumper. Nevertheless, the following excerpt gives some information on the issues. Dumping GI ROMS - Cart, Exec and Grom. The GI-ROMs used in the intellivision are very different from the standard ROMS used in most other computers. This means that common ROM readers can not be used to dump the content of these ROMS. One approach to getting at the content of the ROMS is to build some hardware to accomplish the task.GI-ROMs interface to the 1610 bus directly, they do not require additional external circuitry for address decoding or determining thebus phase. They take the 16 address lines and 3 bus control lines, (and a reset line) raw, exactly as presented by the CPU, and whereappropriate return a 8, 10 or 16 bit value back out onto the multiplexed data/address bus. Reading GI-ROM's requires hardware capable of simulating the address lines and bus control signals of a 1610 CPU, as well as capturing thedata that is presented on the address/data bus by the ROM.The hardware requirements for such a circuit are at a minimum 20 output lines. 16 of these lines that will be used to form thebi-directional data/address bus must be able to be "tristated" - disconnected - so that they do not interfere with the data emitted bythe ROM. In addition, circuitry must be provided to latch the state of the data/address bus so that it can be displayed or otherwise manipulated. The circuit shown later in this section performs these functions, and is designed to connect to a standard PC parallel port. This in itselfrequires some explanation.Interfacing to the PC parallel port The PC parallel port provides 8 bits of parallel output, as well as 4additional output lines intended for printer control. 4 inputs are alsoprovided for returning various printer states. The 20 output lines required for the cart reader are obtained byexpanding the PC's 8 bit parallel printer (data output) port to 24 bitsthrough the use of 3 octal latches. Two of these latches are used togenerate the 16 bit address and the third is used to create the variousbus control signals. The 16 bits of data emitted by the ROM are read back into the PC bylatching the data into two 8 bit parallel-to-serial shift registers andshifting the data one bit at a time into the PC through two of the 4input bits on the printer port.DRIVER SOFTWARE The programs that drive the above hardware are provided below. The address range of the data that will be read are contained in theconstants SADRS (Start address) and EADRS (End address). With the rangeread being SADRS to (EADRS -1). The address of the parallel port used is contained in the variablePPORT. Once a cart has been read and varified it is dumped to STDIO in hexformat. Conversion to binary is a simple matter of redirecting theoutput to a file, and converting the file to binary with the TOBIN.BASprogram (also provided below). Note: GI-ROMS can map into more than one address range, with different data in each address. 2 Quote Link to comment Share on other sites More sharing options...
mr_me Posted October 21, 2015 Share Posted October 21, 2015 The file is out there. Search for "ro-3-9506-010.ic6". I don't know if jzintv emulates Intellivision II. MAME does. 1 Quote Link to comment Share on other sites More sharing options...
intvnut Posted October 22, 2015 Share Posted October 22, 2015 The file is out there. Search for "ro-3-9506-010.ic6". I don't know if jzintv emulates Intellivision II. MAME does. jzIntv does emulate the Intellivision 2. It appears, looking at the MAME source, that MAME's ROM file is in the opposite byte order from most Intellivision ROM images. Compare the EXEC vs. EXEC2 loading lines: ROM_LOAD16_WORD( "exec.bin", (0x1000<<1)+0, 0x2000, CRC(cbce86f7) SHA1(5a65b922b562cb1f57dab51b73151283f0e20c7a)) ROM_LOAD16_WORD_SWAP( "ro-3-9506-010.ic6", (0x400<<1)+0, 0x200, CRC(dd7e1237) SHA1(fb821a643b7714ed4c812553cd3f668766fd44ab)) If you do find this particular file, you can use it with jzIntv if you byte-swap it. In Linux or MacOS you can do that with the following command: . dd if=ro-3-9506-010.ic6 of=exec2.bin conv=swab . That'll create a file named 'exec2.bin' that jzIntv will recognize as the Intellivision 2 EXEC. Dunno what your best option is in Windows. 1 Quote Link to comment Share on other sites More sharing options...
freewheel Posted October 22, 2015 Share Posted October 22, 2015 When the hell did MAME start emulating consoles? lol. I'm out of touch again, I suspect. Quote Link to comment Share on other sites More sharing options...
intvnut Posted October 22, 2015 Share Posted October 22, 2015 (edited) When the hell did MAME start emulating consoles? lol. I'm out of touch again, I suspect. I think it's technically MESS, not MAME, but they share much of the same source tree as I understand it. EDIT: Oh hey, check out the commit message on intv.c: "Move MESS into MAME." Edited October 22, 2015 by intvnut Quote Link to comment Share on other sites More sharing options...
+KylJoy Posted October 22, 2015 Author Share Posted October 22, 2015 MAME is a monster and MESS is moreso... So they are gonna squish 'em together? Quote Link to comment Share on other sites More sharing options...
+intvsteve Posted October 22, 2015 Share Posted October 22, 2015 MAME is a monster and MESS is moreso... So they are gonna squish 'em together? A Monster Mash! 'Tis the season! 2 Quote Link to comment Share on other sites More sharing options...
mr_me Posted October 22, 2015 Share Posted October 22, 2015 I much prefer dedicated emulators, but MAME/MESS does emulate the Keyboard Component. It warns that it currently doesn't work, but it does start. I don't see a way to load a program cartridge/tape, the normal MAME keyboard commands seem to be completely taken over by the Intellivision keyboard. The ECS emulator does the same thing so maybe I don't know what I am doing. Quote Link to comment Share on other sites More sharing options...
Games For Your Intellivision Posted October 23, 2015 Share Posted October 23, 2015 I much prefer dedicated emulators, but MAME/MESS does emulate the Keyboard Component. It warns that it currently doesn't work, but it does start. I don't see a way to load a program cartridge/tape, the normal MAME keyboard commands seem to be completely taken over by the Intellivision keyboard. The ECS emulator does the same thing so maybe I don't know what I am doing. There is a lot of data from the keyboards that has been collected but not publicly released yet. I've been encouraging the person who captured the data to do it for YEARS but no joy yet. Quote Link to comment Share on other sites More sharing options...
rd80sguy Posted June 23, 2020 Share Posted June 23, 2020 is it possible you could give schematics for this old rom dumper? Quote Link to comment Share on other sites More sharing options...
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