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6502 Computer Design Questions

Last post by DavidW « Wed Jun 07, 2023 4:33 pm
Replies: 7
by DavidW » Tue Jun 06, 2023 3:05 pm

7 Replies

8500 Views

Last post by DavidW
Wed Jun 07, 2023 4:33 pm
Ben Eater's Reset Circuit

Last post by sburrow « Sun Jun 04, 2023 8:53 pm
Replies: 54
by sburrow » Mon Jan 09, 2023 2:24 pm
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54 Replies

37948 Views

Last post by sburrow
Sun Jun 04, 2023 8:53 pm
NMOS 6507 stuck at $37FF after reset

Last post by Dr Jefyll « Thu Jun 01, 2023 1:29 am
Replies: 4
by SuperBIOS » Thu Jun 01, 2023 12:39 am

4 Replies

3912 Views

Last post by Dr Jefyll
Thu Jun 01, 2023 1:29 am
Hello 6502 forum

Last post by wayfarer « Tue May 30, 2023 2:07 am
Replies: 1
by puregorill » Sun May 28, 2023 2:02 pm

1 Replies

4649 Views

Last post by wayfarer
Tue May 30, 2023 2:07 am
Dual 6502 in Logisim Evolution?

Last post by cjs « Sun May 21, 2023 7:30 am
Replies: 4
by brieee » Sat May 20, 2023 10:41 pm

4 Replies

8076 Views

Last post by cjs
Sun May 21, 2023 7:30 am
z50 Bus CPU & Logic Card

Last post by cjs « Wed May 10, 2023 3:17 am
Replies: 15
by cdcarter » Sun Mar 05, 2023 7:16 am
1

2
15 Replies

75699 Views

Last post by cjs
Wed May 10, 2023 3:17 am
A slightly embarrasing audio line level question

Last post by barnacle « Sun Apr 30, 2023 10:21 am
Replies: 17
by AndrewP » Wed Apr 26, 2023 5:09 pm
1

2
17 Replies

255337 Views

Last post by barnacle
Sun Apr 30, 2023 10:21 am
[WORKING] Simple 6502 SBC from scratch (Deck65)

Last post by drogon « Fri Apr 14, 2023 7:17 am
Replies: 137
by and3rson » Sat Feb 18, 2023 12:12 am
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9

10
137 Replies

1436866 Views

Last post by drogon
Fri Apr 14, 2023 7:17 am
How to think about power and power supplies

Last post by wayfarer « Fri Mar 31, 2023 2:54 pm
Replies: 20
by BigEd » Fri Aug 25, 2017 8:41 pm
1

2
20 Replies

251416 Views

Last post by wayfarer
Fri Mar 31, 2023 2:54 pm
[SOLVED] Questions reg oscillators and frequency divider

Last post by BigEd « Mon Mar 20, 2023 12:40 pm
Replies: 7
by claw » Mon Mar 20, 2023 5:08 am

7 Replies

22226 Views

Last post by BigEd
Mon Mar 20, 2023 12:40 pm
[SOLVED] Understanding I2C BITBANG explained in 6502 Primer

Last post by claw « Thu Mar 09, 2023 9:16 am
Replies: 6
by claw » Thu Mar 09, 2023 6:42 am

6 Replies

5555 Views

Last post by claw
Thu Mar 09, 2023 9:16 am
[SOLVED] Problem with delay routine with T1 timer of 6522

Last post by claw « Tue Mar 07, 2023 9:15 am
Replies: 11
by claw » Thu Mar 02, 2023 2:29 pm

11 Replies

7052 Views

Last post by claw
Tue Mar 07, 2023 9:15 am
[SOLVED] Problem with PORTB in 6522

Last post by pjdennis « Sat Mar 04, 2023 10:45 am
Replies: 15
by claw » Wed Mar 01, 2023 2:36 pm
1

2
15 Replies

11752 Views

Last post by pjdennis
Sat Mar 04, 2023 10:45 am
Visual6502 DPControl?

Last post by BigEd « Mon Feb 27, 2023 8:55 am
Replies: 6
by dvs83 » Sun Feb 26, 2023 6:22 pm

6 Replies

8867 Views

Last post by BigEd
Mon Feb 27, 2023 8:55 am
six five O two -o-poly

Last post by randallmeyer2000 « Sun Feb 12, 2023 2:12 am
Replies: 66
by randallmeyer2000 » Sun Oct 18, 2015 9:28 pm
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66 Replies

49412 Views

Last post by randallmeyer2000
Sun Feb 12, 2023 2:12 am
Tejotron - Ben Eater-style 6502 system in browser

Last post by agsb « Fri Feb 10, 2023 1:10 am
Replies: 20
by BigEd » Wed Jan 20, 2021 11:24 am
1

2
20 Replies

19342 Views

Last post by agsb
Fri Feb 10, 2023 1:10 am
SRAM latching /WE?

Last post by BigDumbDinosaur « Thu Feb 09, 2023 4:45 pm
Replies: 9
by sburrow » Wed Feb 08, 2023 1:02 pm

9 Replies

8207 Views

Last post by BigDumbDinosaur
Thu Feb 09, 2023 4:45 pm
Dummy ISR for VIA

Last post by sburrow « Wed Feb 01, 2023 12:36 pm
Replies: 23
by sburrow » Sat Jan 28, 2023 11:41 am
1

2
23 Replies

9021 Views

Last post by sburrow
Wed Feb 01, 2023 12:36 pm
6502 Assembler and Linker

Last post by Paganini « Sun Jan 08, 2023 5:12 am
Replies: 2
by rbc7snc » Sun Jan 08, 2023 3:19 am

2 Replies

2727 Views

Last post by Paganini
Sun Jan 08, 2023 5:12 am
6502(ish) computer design software

Last post by AndrewP « Wed Jan 04, 2023 11:09 am
Replies: 9
by gonzo » Wed Dec 28, 2022 3:28 pm

9 Replies

4823 Views

Last post by AndrewP
Wed Jan 04, 2023 11:09 am
Why does ADC add one if carry flag set?

Last post by JimBoyd « Tue Jan 03, 2023 3:58 am
Replies: 23
by jeffythedragonslayer » Sat Jun 04, 2022 2:15 am
1

2
23 Replies

9887 Views

Last post by JimBoyd
Tue Jan 03, 2023 3:58 am
hazards?

Last post by jeffythedragonslayer « Thu Dec 29, 2022 7:49 am
Replies: 3
by jeffythedragonslayer » Thu Nov 04, 2021 3:12 am

3 Replies

2178 Views

Last post by jeffythedragonslayer
Thu Dec 29, 2022 7:49 am
Starting out

Last post by GaBuZoMeu « Thu Nov 24, 2022 11:39 am
Replies: 15
by electricdream » Sun Nov 20, 2022 5:19 pm
1

2
15 Replies

6212 Views

Last post by GaBuZoMeu
Thu Nov 24, 2022 11:39 am
Decoded PHI2

Last post by Paganini « Mon Nov 21, 2022 8:00 pm
Replies: 12
by sburrow » Wed Nov 16, 2022 6:37 pm

12 Replies

5306 Views

Last post by Paganini
Mon Nov 21, 2022 8:00 pm
Recommended tools / tutorials

Last post by Sheep64 « Mon Nov 21, 2022 12:16 pm
Replies: 4
by llaffer » Tue Jun 28, 2022 1:21 am

4 Replies

4279 Views

Last post by Sheep64
Mon Nov 21, 2022 12:16 pm
Clock (and I guess other signals) waveforms

Last post by Sheep64 « Mon Nov 21, 2022 12:13 pm
Replies: 27
by adrianhudson » Thu Jun 23, 2022 7:27 am
1

2
27 Replies

6435 Views

Last post by Sheep64
Mon Nov 21, 2022 12:13 pm
New here and looking to upgrade my Apple II

Last post by Sheep64 « Mon Nov 21, 2022 12:05 pm
Replies: 13
by tetsujin » Mon Aug 01, 2022 4:38 pm

13 Replies

2393 Views

Last post by Sheep64
Mon Nov 21, 2022 12:05 pm
Question about 6502 datasheet Timing chart (page25)

Last post by pjdennis « Wed Nov 02, 2022 7:06 pm
Replies: 15
by MiraLagatta » Fri Oct 28, 2022 9:13 pm
1

2
15 Replies

2150 Views

Last post by pjdennis
Wed Nov 02, 2022 7:06 pm
W65C51 transmit ok, but can't receive

Last post by GARTHWILSON « Tue Nov 01, 2022 8:44 am
Replies: 6
by willie68 » Mon Oct 31, 2022 3:36 pm

6 Replies

3204 Views

Last post by GARTHWILSON
Tue Nov 01, 2022 8:44 am
Building +5v 60kHz PWM with a TL494 ic

Last post by vmarcus « Mon Oct 31, 2022 5:27 am
Replies: 12
by vmarcus » Wed Oct 26, 2022 1:30 am

12 Replies

1992 Views

Last post by vmarcus
Mon Oct 31, 2022 5:27 am
Newbie trying to understand Ben Eater's Address Decoder

Last post by BigDumbDinosaur « Fri Oct 28, 2022 4:37 am
Replies: 8
by MiraLagatta » Thu Oct 27, 2022 3:16 am

8 Replies

1561 Views

Last post by BigDumbDinosaur
Fri Oct 28, 2022 4:37 am
get label address

Last post by teamtempest « Thu Oct 20, 2022 2:41 pm
Replies: 9
by djenn » Wed Sep 07, 2022 11:30 am

9 Replies

1780 Views

Last post by teamtempest
Thu Oct 20, 2022 2:41 pm
Replication of B128 – CBMII series

Last post by vmarcus « Wed Oct 19, 2022 12:30 am
Replies: 11
by vmarcus » Tue Jun 07, 2022 3:28 am

11 Replies

1713 Views

Last post by vmarcus
Wed Oct 19, 2022 12:30 am
Is there a way to specify memory address for C programming?

Last post by CountChocula « Fri Aug 12, 2022 5:30 pm
Replies: 3
by Aloha6502 » Fri Aug 12, 2022 8:37 am

3 Replies

1029 Views

Last post by CountChocula
Fri Aug 12, 2022 5:30 pm
RC6502 build - struggling with TL866/28C64

Last post by BillO « Fri Aug 12, 2022 12:13 am
Replies: 16
by RegH » Thu May 19, 2022 3:19 pm
1

2
16 Replies

2586 Views

Last post by BillO
Fri Aug 12, 2022 12:13 am
ASL with Accumulator??

Last post by AAGDOS « Fri Aug 05, 2022 7:49 pm
Replies: 8
by AAGDOS » Thu Aug 04, 2022 8:55 pm

8 Replies

1506 Views

Last post by AAGDOS
Fri Aug 05, 2022 7:49 pm
Voltage and Current

Last post by sburrow « Thu Aug 04, 2022 7:31 pm
Replies: 22
by sburrow » Wed Aug 03, 2022 7:04 pm
1

2
22 Replies

2754 Views

Last post by sburrow
Thu Aug 04, 2022 7:31 pm
apostrophe after signal name

Last post by jeffythedragonslayer « Sun Jul 24, 2022 8:19 am
Replies: 10
by jeffythedragonslayer » Sat Jul 23, 2022 9:14 pm

10 Replies

2852 Views

Last post by jeffythedragonslayer
Sun Jul 24, 2022 8:19 am
Can not get windows to see my WDC65C816 board

Last post by tmr4 « Fri Jul 15, 2022 3:16 pm
Replies: 1
by anagnorisis » Fri Jul 15, 2022 12:32 pm

1 Replies

1763 Views

Last post by tmr4
Fri Jul 15, 2022 3:16 pm
Weird data bus write problem Ben eater 6502

Last post by BigEd « Thu Jul 14, 2022 9:06 am
Replies: 4
by CountChocula » Sun Jun 26, 2022 7:06 pm

4 Replies

1169 Views

Last post by BigEd
Thu Jul 14, 2022 9:06 am
clock issues

Last post by Aloha6502 « Fri Jul 08, 2022 8:21 am
Replies: 9
by djenn » Fri Jul 01, 2022 5:20 pm

9 Replies

1462 Views

Last post by Aloha6502
Fri Jul 08, 2022 8:21 am
Help with MAX3100 and FTDI

Last post by GARTHWILSON « Thu Jun 16, 2022 8:10 am
Replies: 12
by DRG » Fri Dec 31, 2021 6:04 pm

12 Replies

2319 Views

Last post by GARTHWILSON
Thu Jun 16, 2022 8:10 am
byte length of 65816 instructions

Last post by jeffythedragonslayer « Thu Jun 16, 2022 3:56 am
Replies: 7
by jeffythedragonslayer » Wed Nov 03, 2021 9:44 am

7 Replies

1256 Views

Last post by jeffythedragonslayer
Thu Jun 16, 2022 3:56 am
order of binary digits

Last post by commodorejohn « Tue Jun 14, 2022 5:29 pm
Replies: 12
by jeffythedragonslayer » Fri May 20, 2022 9:15 pm

12 Replies

1558 Views

Last post by commodorejohn
Tue Jun 14, 2022 5:29 pm
Can write EPROM at specific addresses instead of entirely?

Last post by Aloha6502 « Tue Jun 07, 2022 10:52 pm
Replies: 4
by Aloha6502 » Tue Jun 07, 2022 5:22 pm

4 Replies

1037 Views

Last post by Aloha6502
Tue Jun 07, 2022 10:52 pm
6522 Peripheral Control Register - setting CA2 and CB2 high?

Last post by Aloha6502 « Tue Jun 07, 2022 4:25 pm
Replies: 5
by Aloha6502 » Tue Jun 07, 2022 9:03 am

5 Replies

3094 Views

Last post by Aloha6502
Tue Jun 07, 2022 4:25 pm
.Inn and .Ann in ca65 .SMART mode

Last post by jeffythedragonslayer « Thu Jun 02, 2022 5:00 am
Replies: 2
by jeffythedragonslayer » Thu Jun 02, 2022 3:05 am

2 Replies

632 Views

Last post by jeffythedragonslayer
Thu Jun 02, 2022 5:00 am
Dual 65C816/65C02 build

Last post by Dr Jefyll « Wed Jun 01, 2022 11:59 pm
Replies: 6
by AlanCanon » Thu Mar 31, 2022 7:01 am

6 Replies

1738 Views

Last post by Dr Jefyll
Wed Jun 01, 2022 11:59 pm
Block comment in ca65

Last post by jeffythedragonslayer « Wed Jun 01, 2022 9:31 pm
Replies: 9
by jeffythedragonslayer » Sat May 21, 2022 8:36 pm

9 Replies

1515 Views

Last post by jeffythedragonslayer
Wed Jun 01, 2022 9:31 pm
Processors sometimes spelled with C

Last post by GARTHWILSON « Sat May 28, 2022 2:54 am
Replies: 3
by jeffythedragonslayer » Sat May 28, 2022 2:00 am

3 Replies

765 Views

Last post by GARTHWILSON
Sat May 28, 2022 2:54 am

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