Add a skeleton driver for DEC MicroVAX 3100 #13331
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New systems marked not working ------------------------------ MicroVAX 3100 [OldComputers ES]
ajrhacker
requested changes
Feb 5, 2025
src/mame/dec/microvax3100.cpp
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| ROMX_LOAD( "dec89_23-116e8-00_system_rom_lo_word.e24", 0x00000, 0x20000, CRC(69ef8cf5) SHA1(a59a500921278dc356a519cb435641426c844779), ROM_NIBBLE | ROM_SHIFT_NIBBLE_LO | ROM_SKIP(1) ) | ||
| ROMX_LOAD( "dec89_23-117e8-00_system_rom_hi_word.e25", 0x00000, 0x20000, CRC(df572ac3) SHA1(5e91d0f4fc8442e3ebc2424d9f85078ba00d2de5), ROM_NIBBLE | ROM_SHIFT_NIBBLE_HI | ROM_SKIP(1) ) |
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I don't think this loading is correct. These are supposed to be 65536x16 EPROMs, not 131072x4.
src/mame/dec/microvax3100.cpp
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| // YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS | ||
| COMP( 1989, mvax3100, 0, 0, microvax3100, microvax3100, microvax3100_state, empty_init, "Digital Equipment Corporation", "MicroVAX 3100", MACHINE_NOT_WORKING | MACHINE_NO_SOUND) |
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Unfortunately this is not specific enough, since DEC released several different (though feature-comparable) systems under the "MicroVAX 3100" name. The PCB description suggests that this one is a Model 10 or 20 (there was very little difference between these two).
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Fixed! It's model 10. We'll dump a Model 20 soon
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New systems marked not working
MicroVAX 3100 [OldComputers ES]