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Forum FAQ and Guidelines
#ThisGroup
This group has a FAQ and guidelines page of sorts on this group's Wiki at: *https://groups.io/g/cosmacelf/wiki/CosmacElfGroupFaq* Email users will find a link to this in the footer area of posted mess
This group has a FAQ and guidelines page of sorts on this group's Wiki at: *https://groups.io/g/cosmacelf/wiki/CosmacElfGroupFaq* Email users will find a link to this in the footer area of posted messages. To make this document more discoverable for those who use the groups.io web interface, this message is being posted as a "sticky" topic so that it appears at the top of the displayed list of messages.
By Dave Ruske
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Is there a Store-and-Advance 1802 instruction? 4 messages
I'd like to shave ~200-mS off the boot time in my Boot Loader / ROM Emulator IC by eliminating one of the 1802 instructions in the copy loop. Is there a Store-and-Advance 1802 instruction, similar to
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I'd like to shave ~200-mS off the boot time in my Boot Loader / ROM Emulator IC by eliminating one of the 1802 instructions in the copy loop. Is there a Store-and-Advance 1802 instruction, similar to
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By Mike McLaren, K8LH
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RTC/NVR/UART board update 2 messages
At this point all the finalized orders have either been sent or have been packaged up and ready to send. If you did not yet receive a shipped email from me then your boards will ship on Tuesday, which
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At this point all the finalized orders have either been sent or have been packaged up and ready to send. If you did not yet receive a shipped email from me then your boards will ship on Tuesday, which
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By Mike Riley
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Comix-35 keyboard 7 messages
Hi I just received my keyboard parts from Amazon.ca The box of 110 MX keys was $35 and the 108 keycap set was $37. Cheers Get Outlook for iOS
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Hi I just received my keyboard parts from Amazon.ca The box of 110 MX keys was $35 and the 108 keycap set was $37. Cheers Get Outlook for iOS
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By Peter Renaud
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COMIX-35 - COMX-35 Clone 130 messages
Hello, This is not my project, but I thought it may interest some of you. https://github.com/schlae/comix-35 This is my COMX-35 project: http://www.comx35.com/avicomx35.html ED
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Hello, This is not my project, but I thought it may interest some of you. https://github.com/schlae/comix-35 This is my COMX-35 project: http://www.comx35.com/avicomx35.html ED
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By ekeefe8051
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Question about EPROM programming. 32 messages
Hi, I have almost finished my Pico Elf assembly, but it uses an EPROM rather than EEPROM. I built my own EEPROM programmer a few years ago, but it obviously can't program an EPROM. So I need to learn
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Hi, I have almost finished my Pico Elf assembly, but it uses an EPROM rather than EEPROM. I built my own EEPROM programmer a few years ago, but it obviously can't program an EPROM. So I need to learn
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By Martin Heermance
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Pico/Elf Pixie Video Simulator for GLCD 3 messages
#Pixie
#Arduino
#Pico-Elf-V2
Hi, I have built a working 1861 Pixie Video simulator using a Teensy 3.2 for the Pico/Elf v2. It uses signals from the Pico/Elf Expansion connector and a 74HC374 (Octal Latch) to latch the data for th
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Hi, I have built a working 1861 Pixie Video simulator using a Teensy 3.2 for the Pico/Elf v2. It uses signals from the Pico/Elf Expansion connector and a 74HC374 (Octal Latch) to latch the data for th
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By Gaston Williams
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GENERAL PHILOSOPHY OF WHAT THE 1802 COULD BE USED FOR. 2 messages
GENERAL PHILOSOPHY OF WHAT THE 1802 COULD BE USED FOR. SOFTWARE TOOLS, SEEM TO BE THE THE MOST UNSTABLE TOOLS/PARTS MAN HAS EVER MADE ! EVEN MORE UNSTABLE MAYBE WHAT TO USE IT FOR, SOME SAY GAMES, SOM
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GENERAL PHILOSOPHY OF WHAT THE 1802 COULD BE USED FOR. SOFTWARE TOOLS, SEEM TO BE THE THE MOST UNSTABLE TOOLS/PARTS MAN HAS EVER MADE ! EVEN MORE UNSTABLE MAYBE WHAT TO USE IT FOR, SOME SAY GAMES, SOM
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By John Gooch
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Elf/OS memory expansion to 64K 3 messages
Related to the recent discussion on paged memory, but different, so starting as its own topic… I am going in a different direction for more memory, at least as a first step. I see having the largest p
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Related to the recent discussion on paged memory, but different, so starting as its own topic… I am going in a different direction for more memory, at least as a first step. I see having the largest p
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By David Madole
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Measuring bent sheet metal 5 messages
Hello, I'm getting ready to do a measured drawing for the Netronics Elf II and related ascii keyboard metal cases. I have very limited experience with sheet metal. Curious if anyone has experience wit
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Hello, I'm getting ready to do a measured drawing for the Netronics Elf II and related ascii keyboard metal cases. I have very limited experience with sheet metal. Curious if anyone has experience wit
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By ekeefe8051
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Paged RAM expansion questions 9 messages
I'm planning a new RAM expansion for my system. I'm now using a 128kx8 RAM with A16 tied LO, so only 64k. So I'm open to suggestions about what to do with the other 64k. One idea I had was to choose a
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I'm planning a new RAM expansion for my system. I'm now using a 128kx8 RAM with A16 tied LO, so only 64k. So I'm open to suggestions about what to do with the other 64k. One idea I had was to choose a
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By cmdrcosmac
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PE Serial Port 5 messages
Good Evening 1802 folks, I'm sure this has been addressed before, but I'm pretty late into the PE project and must have missed it. I cannot find any information for the cable connecting to the DB9 con
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Good Evening 1802 folks, I'm sure this has been addressed before, but I'm pretty late into the PE project and must have missed it. I cannot find any information for the cable connecting to the DB9 con
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By Herschel Keithline
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SD-to-CF-to-IDE 3 messages
Just wanted to say that the attached pic all worked together. I used Mike's excellent tut on making larger CF cards working.
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Just wanted to say that the attached pic all worked together. I used Mike's excellent tut on making larger CF cards working.
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By mmmkdm1
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Disktool 2 messages
Hi Mike, Maybe you have described this and I missed it. Where are the bits that chmod manipulates? Disktool is getting kinda outdated since it doesn't support this. Best regards, Bo/
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Hi Mike, Maybe you have described this and I missed it. Where are the bits that chmod manipulates? Disktool is getting kinda outdated since it doesn't support this. Best regards, Bo/
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By BorutK
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Elf/OS programs and source on Github
I have published the source are releases for my Elf/OS programs to Github: https://github.com/dmadole This includes turbo, nitro, sum, and yr. I’ll try to keep them up-to-date there if I make changes
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I have published the source are releases for my Elf/OS programs to Github: https://github.com/dmadole This includes turbo, nitro, sum, and yr. I’ll try to keep them up-to-date there if I make changes
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By David Madole
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Source of 1802BCE and 1863 3 messages
Happened upon these. Might be of interest to someone. I have never shopped from this company so I can't say anything about them. 1802 https://www.electronicsurplus.com/rca-cdp1802bce-ic-cmos-8-bit-mic
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Happened upon these. Might be of interest to someone. I have never shopped from this company so I can't say anything about them. 1802 https://www.electronicsurplus.com/rca-cdp1802bce-ic-cmos-8-bit-mic
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By wrcooke@...
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stg_elf2k_elf2k Serial UART configuration for PE daughter card 53 messages
#Serial
#ELF2
#Pico-Elf-V2
If you are using the STG EEPROM and you want to use the UART port, here are the steps required: 1. Connect your terminal to the PE serial port and set to 4800 bps 2. Hard reset the PE and hit CR to co
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If you are using the STG EEPROM and you want to use the UART port, here are the steps required: 1. Connect your terminal to the PE serial port and set to 4800 bps 2. Hard reset the PE and hit CR to co
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By Ham Radio
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Help - advice on diode-resistor gate resistor values 7 messages
I have had an issue with the DMA circuit on the CF boards I had made, for a while I set it aside and used the breadboard version, which worked fine, or I just didn’t use DMA. I finally decided to sit
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I have had an issue with the DMA circuit on the CF boards I had made, for a while I set it aside and used the breadboard version, which worked fine, or I just didn’t use DMA. I finally decided to sit
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By David Madole
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Italian VIP 3 messages
#VIP
Got attached pictures from Maurizio Candito from Italy. This VIP is actually in a metal box, I think it looks really cool and thought some of you might like to see it :). It is in working order and Ma
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Got attached pictures from Maurizio Candito from Italy. This VIP is actually in a metal box, I think it looks really cool and thought some of you might like to see it :). It is in working order and Ma
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By Marcel van Tongeren
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What if the 1802 had 24 address lines? 29 messages
Richard wrote: This is an interesting approach, Richard. Rather than using CF cards, SD-cards, or some other very modern tech, you're using plain old bytewide RAMs. I would guess that the software to
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Richard wrote: This is an interesting approach, Richard. Rather than using CF cards, SD-cards, or some other very modern tech, you're using plain old bytewide RAMs. I would guess that the software to
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By Richard
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