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Develop Arduino code to read SD card files and transfer to 6502/PIA -- 2

$250-750 USD

Completato
Pubblicato quasi 4 anni fa

$250-750 USD

Pagato al completamento
I have designed a retro 6502-based computer from 1976. My goal is to have my single-board computer read text files from an SD card and transfer the code to the memory of the computer. My attempts have been partially successful but I lack the time to complete the job. I will provide the existing code and a prototype of the retro computer. I'm sure the primary hurdle to overcome is the timing of the data transfer. Perhaps this will need some method to read the status of the 6502 processor or the 6521 PIA to determine if it is ready for the next byte. My existing code reads the SD card and transfers it, but mosts bytes are missed as the 6502 or PIA is not ready for the data.
Rif. progetto: 24717846

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12 proposte
Progetto a distanza
Attivo 4 anni fa

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Hello. What Arduino board are you using (Nano / Uno / Mega / NodeMCU)? Are you using a serial or parallel connection between the Arduino and the 6521 PIA? (Looking at the datasheet for the 6521, it looks like it could support both - either using an entire 8-bit port for a parallel bus, or bit-banging a serial stream on a single pin.) It sounds like you only need the code for the Arduino - i.e. that the code for the 6502 is already written. Can you confirm this? (I did some 6502/6800 assembly programming back in college - but little or none since then.) Two final questions: - Could you share a schematic by any chance (even a partial one)? - What transfer rate are you hoping to achieve? I don't have 6502 or 6521 devices unfortunately. I can try to order them, but that could take a while. In the meantime I could try to use a 6502 emulator (although I am not sure that will help a great deal if I can not emulate the PIA.) I might need to tweak the bid - either the price or timeframe - once I have full details. In the meantime ... Please note that this bid is PROVISIONAL. I am based in Ireland - so a few hours ahead of your timezone in the US.
$675 USD in 28 giorni
5,0 (9 valutazioni)
5,4
5,4
12 freelance hanno fatto un'offerta media di $504 USD
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Hi I am experienced embedded system developer and can do it for you. I have worked on rockwell 6502 PIA before and have worked with SD card too please get in touch to discuss it further. I am waiting for your reply to start Regards
$650 USD in 7 giorni
4,8 (263 valutazioni)
8,0
8,0
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Hello sir, I have experience in designing electronics circuits and can program all kinds of microcontrollers. You can discuss your project with me in chat and we can move on right away. Thank you.
$500 USD in 20 giorni
4,8 (67 valutazioni)
7,1
7,1
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A Data Scientist with experience in Python, R programming, R Shiny, R studio and anything related to data science and python Master in Engineering, Electrical and Electronic Engineer, who is dynamic, reliable, resourceful, committed and organized with enthusiastic approach to succeed with a pleasant attitude. Possessing excellent analytical skill and good research background. I have successfully completed IELTS with an overall band of 7 and have a good proficiency in English 10 Years Experience in Data Science Data Visualization Power BI Tableau Business development Anything on R programming COMPLETED PROJECTS • FM radio. • VHDL Design of an Up/Down Counter. • Design of Up/Down Counter using PIC. • Duck Shooter Program using C. • Pointer movement controller on 2-dimentional axis using C. • LCD display Manipulation projects including: o Text Display o Volt-Meter • Analog to Digital Conversion (8-bit). • Sound to Light Color Organ Design and Development. • Minesweeper Player Creation using PIC. • Simulation of an End to End Communication System with MATLAB. • (BENG Individual Project) (MENG Part A). • (MENG Individual Project) (MENG Part B). • (MENG Group Project).
$250 USD in 7 giorni
4,7 (12 valutazioni)
4,4
4,4
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Sir, I have read your requirements and would like to inform you that, my team and I can readily handle your task. We also have some sample projects which showcase our previous work, incase you wanted to have a look. We do not charge anything until we bring you the successful results. No token money shall be asked from our side, nothing. We guarantee you the best quality of work and timely service. For more information kindly google Maskottchen Technologies.
$500 USD in 7 giorni
4,1 (20 valutazioni)
3,5
3,5
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Dear, client. I just read your request carefully and very excited to work on this and have rich experience in ARDUINO, ESP32, ESP8266 and Raspberry PI . I think i 'll be helpful to you. If you want to hire me, we can talk further about the request and start as soon as possible. Looking forward to hearing from you. Best Regards.
$600 USD in 10 giorni
5,0 (3 valutazioni)
2,9
2,9
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Hello, I'm electronic engineer and I able to complete your project. I am very passionate with my work I really enjoy that I do. I look forward to hearing from you. Regards, Alejandro
$750 USD in 7 giorni
3,4 (2 valutazioni)
2,8
2,8
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Can explain in detail??
$556 USD in 10 giorni
0,0 (0 valutazioni)
0,0
0,0

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Bandiera: UNITED STATES
Willmar, United States
5,0
1
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Membro dal apr 1, 2020

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