It's funny! I bought my VIP brand new and played for a while, until the OSI Superboard came along. Well, an old friend was hoarding it and returned it to me....
311
dddiceman
Jul 27, 2011 1:03 pm
... That's a cool idea, and it should work on the hardware. It probably won't work on an emulator, because the display hardware on the emulating computer will...
312
ekeefe8051
Aug 18, 2011 3:40 pm
Hello, I have been working to recreate all of the expansion boards for the VIP. So far I have built/assembled and tested the following: VP-550 Super Sound...
313
Ray Sills
raysills
Aug 18, 2011 5:35 pm
HI Ed: Yes, indeed... the VP 576 2-port expansion board has no electronics on board. It's just a run of traces from the "plug" to 2 sockets, plus a pair of...
314
mattmik
mikolaym
Aug 18, 2011 11:46 pm
Hi Ed! Wow, you've recreated all of those boards? Impressive! Did you do this just for fun? Or are you planning on selling these boards, either in a kit form...
315
ekeefe8051
Aug 19, 2011 12:15 am
Hello, I did it just for fun. I never really gave any thought to selling them. Some of the parts are real hard to find. It took a while and a lot of research...
316
ekeefe8051
Aug 19, 2011 1:58 am
@Ray Sills Thank you. I'm in no real hurry. When/if you get to the place you have the board, i would greatly appreciate it if you would take some pictures of...
317
Ray Sills
raysills
Aug 19, 2011 11:46 am
Hi Ed: OK. I expect to be there in a couple weeks, so I will take photos then. I think once you see them, it'll be obvious how they were constructed. 73 de...
318
ekeefe8051
Aug 19, 2011 1:55 pm
@Ray Sills Thanks you. I would like to see the board because I am also trying to recreate the shape, size and component layout of each board. Thanks again. ED...
319
ekeefe8051
Aug 19, 2011 8:21 pm
Hello, Here is a few links to the boards I have created: VP-595 SIMPLE SOUND BOARD The first one is what the RCA version looks ...
320
Ethan Dicks
erd_6502
Aug 19, 2011 8:47 pm
... Very interesting. I've had a VIP for many years and have demoed it at vintage computer gatherings, but I've never owned any expansion boards for it. Did...
321
mattmik
mikolaym
Aug 22, 2011 5:01 pm
Hey Ed! Those look great! Professional quality. It's great that someone's continuing to develop these boards, even at a hobbyist level. mattmik...
322
dddiceman
Sep 12, 2011 1:01 pm
FYI, it is possible to substitute the CDP1806ACE for the 1802 processor on the VIP. It is directly pin compatible and I tested one in the processor socket....
323
peter_chlau
Nov 14, 2011 2:01 pm
Hi, This is really amazing. The boards have professional looking. It is glad to know that the whole range of RCA VIP add-on cards are still being kept in good...
324
Marcel
etxmato
Nov 22, 2011 10:33 pm
Hi All, Finally, 8 months since the last release, I managed to release Emma 02 - V1.17, main change is the introduction of a Linux Ubuntu version and a lot of...
325
Ethan Dicks
erd_6502
Nov 23, 2011 4:58 pm
... Thanks for that! Now I can run it. Looks slick. I should dig out my IDE images and try a few out with the Elf2K emulator. Mostly, I have stock ElfOS,...
326
mattmik
mikolaym
Nov 24, 2011 10:43 pm
Works great, as usual! :D mattmik...
327
Bee Dee
whd_whd_whd
Nov 28, 2011 4:24 am
Hi. I just joined. I am also a member of the COSMACElf and SpareTimeGizmos groups. I am interested in all things 1802. I am in development of an online 1802...
328
mattmik
mikolaym
Dec 6, 2011 7:24 pm
Hey everyone! I recently began writing some documentation (a tutorial of sorts) for the CHIP-8 language, and I plan on expanding it to cover extensions to...
329
Marcel
etxmato
Dec 7, 2011 5:39 pm
Hi Matt, David (Winter) and myself looked into this a few months back. Reason why we investigated it was because it looked like the VIP Chip8 handled the 8XY6,...
330
mattmik
mikolaym
Dec 7, 2011 6:04 pm
Hey Marcel! Thanks for the response! That helped a bunch. After checking the CHIP-8 Exposed article in Volume 1, Issue II of VIPER, it seems that you are...
331
David Winter
david__winter
Dec 7, 2011 7:58 pm
Hi there, A quick answer concerning those 8XYN instructions (where X and Y are the registers and N the type of instruction). The original chip-8 interpreter...
332
mattmik
mikolaym
Dec 7, 2011 9:35 pm
Hey Dave! Thanks for the comment concerning the 8XYN instructions. That clears up a lot. I plan on describing the proper use (with VY being shifted into VX) in...
333
Ray Sills
raysills
Dec 8, 2011 1:28 am
HI Matt: OK! And, that's great news about you writing up a tutorial for CHIP-8. I seem to recall having once read (not sure where) something about those...
334
mattmik
mikolaym
Dec 8, 2011 1:57 am
Hey all! As mentioned in my previous post, I'm currently writing a tutorial on CHIP-8 programming. I just wanted to get everyone's feedback on what they're...
335
ekeefe8051
Dec 28, 2011 8:50 pm
Hello, I have been working on a surface mount COSMAC VIP for a while now. I just finished testing, and all is working. Here are some photos of the finished...
336
dddiceman
Dec 29, 2011 1:47 pm
That's amazing. Curious, how does the EEPROM work? I thought they were serial devices. Also, what is the total supply current? I ask because I heavily modified...
337
dddiceman
Dec 29, 2011 1:49 pm
Trivia question - anybody know the purpose of the row of holes on the left side of the VIP board? Binding posts?...
338
Ethan Dicks
erd_6502
Dec 29, 2011 6:28 pm
... Agreed. ... Low-pin-count serial EEPROMs are common. So are JEDEC-footprint EEPROMs. I have a few 28F64s, the smallest ones I've personally encountered...
339
ekeefe8051
Dec 29, 2011 11:50 pm
Hello, The EEPROM I used is an Atmel AT28C256. It has a parallel interface and works just like a regular EPROM. I chose to only use 32K of memory because most...
