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No unread posts Attachment(s) My first SBC, and a SRAM-backup question

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calculi

21

2299

Wed Nov 18, 2015 8:54 pm

calculi View the latest post

No unread posts Attachment(s) Software Transparent 6551/6850 UART Replacement

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jmp(FFFA)

50

9630

Fri Nov 13, 2015 3:52 pm

jmp(FFFA) View the latest post

No unread posts Attachment(s) Enhanced Dynamically Reconfigurable Systems Using CPLD/FPGA

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jmp(FFFA)

72

5618

Fri Nov 06, 2015 7:47 pm

Arlet View the latest post

No unread posts Decoupling caps

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banedon

15

1553

Tue Nov 03, 2015 9:56 pm

GARTHWILSON View the latest post

No unread posts SD2IEC evo2 and Home Made SBCs

Martin_H

3

1380

Mon Oct 26, 2015 2:48 am

Martin_H View the latest post

No unread posts Attachment(s) Bus Monitor PCB

banedon

8

916

Wed Oct 21, 2015 9:38 pm

banedon View the latest post

No unread posts Attachment(s) Simple 6502 Test System with ROM Emulator

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jmp(FFFA)

25

2790

Wed Oct 14, 2015 2:00 am

jmp(FFFA) View the latest post

No unread posts Attachment(s) Keypad for use with VIA

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banedon

24

2381

Wed Oct 07, 2015 10:55 pm

banedon View the latest post

No unread posts Attachment(s) WDC MPU TTL Compatibility

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BigDumbDinosaur

36

4373

Wed Oct 07, 2015 4:39 am

BigDumbDinosaur View the latest post

No unread posts Attachment(s) ROMulus the 1st

cbscpe

9

2445

Mon Sep 28, 2015 12:32 pm

cbscpe View the latest post

No unread posts Attachment(s) It's alive!

mkl0815

10

1204

Mon Sep 14, 2015 3:06 pm

scotws View the latest post

No unread posts Attachment(s) 6502/65816 Pipeline

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cr1901

19

3704

Sat Sep 12, 2015 12:41 pm

BigEd View the latest post

No unread posts Wait, TXS zeros the high byte of S in 8-bit X 65816 native?

scotws

7

1495

Fri Sep 11, 2015 6:55 pm

GARTHWILSON View the latest post

No unread posts Attachment(s) IRQ,NMI,BRK detect

grzeg

6

1259

Fri Sep 11, 2015 6:43 pm

grzeg View the latest post

No unread posts PET 2001C transformer

dmg

1

472

Fri Sep 11, 2015 3:33 pm

tsky View the latest post

No unread posts Attachment(s) Quick Check for schematic

mkl0815

12

1282

Fri Sep 11, 2015 11:32 am

mkl0815 View the latest post

No unread posts Attachment(s) New 65C02 project

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banedon

59

4196

Thu Sep 10, 2015 6:51 pm

banedon View the latest post

No unread posts Attachment(s) What to do with the 65816's "mystery" pins

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scotws

24

14294

Mon Sep 07, 2015 8:21 am

scotws View the latest post

No unread posts Discussion of SRAM/DRAM for hobbists at Big O'Mess of Wires

scotws

6

1481

Sun Sep 06, 2015 5:36 pm

BigDumbDinosaur View the latest post

No unread posts Attachment(s) Poll: EPROM or EEPROM?

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nkeck72

17

1991

Tue Sep 01, 2015 3:34 pm

BigEd View the latest post

No unread posts ROM emulation/copier

banedon

10

1245

Tue Sep 01, 2015 3:31 pm

BigEd View the latest post

No unread posts Attachment(s) VDU, V9958

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legacy

26

5901

Mon Aug 31, 2015 7:52 pm

Martin_H View the latest post

No unread posts Attachment(s) Poll: PHI2 source

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banedon

23

2148

Mon Aug 31, 2015 5:18 pm

BigDumbDinosaur View the latest post

No unread posts Attachment(s) Power-eating Bus Monitor

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banedon

21

1588

Sat Aug 29, 2015 8:35 pm

banedon View the latest post

No unread posts Attachment(s) Acceptable PHI2 distortion, edge rise & fall times

banedon

5

505

Fri Aug 28, 2015 7:08 pm

banedon View the latest post

No unread posts 6522 IRF and IER

JimDrew

4

739

Sun Aug 23, 2015 5:22 pm

BitWise View the latest post

No unread posts Attachment(s) Oscillator IC?

Aslak3

11

1235

Thu Aug 20, 2015 6:26 am

Aslak3 View the latest post

No unread posts Attachment(s) 6522 pin state during reset?

JimDrew

8

1171

Sat Aug 15, 2015 4:52 am

JimDrew View the latest post

No unread posts Does 6502 put FF in stack pointer register asa it gets power

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susan12

20

3993

Thu Aug 13, 2015 9:51 am

scotws View the latest post

No unread posts RTI and enabling of interrupts

JimDrew

4

622

Wed Aug 12, 2015 2:44 pm

RichTW View the latest post

No unread posts Attachment(s) Floating inputs eg. Chip Selects

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Aslak3

16

1515

Tue Aug 11, 2015 8:55 am

Druzyek View the latest post

No unread posts Attachment(s) Another Bootstrap for a ROM less system

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cbscpe

27

3704

Wed Aug 05, 2015 2:10 am

BigDumbDinosaur View the latest post

No unread posts Send data from 6502 to a AVR microcontroller

cbscpe

12

1700

Sun Aug 02, 2015 6:43 pm

cbscpe View the latest post

No unread posts Least Obvious Incompatibility

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JenniferDigital

21

5337

Sat Aug 01, 2015 9:16 am

JenniferDigital View the latest post

No unread posts 6522 Shift Register & Servos

apatco

7

1180

Fri Jul 31, 2015 2:01 am

JimDrew View the latest post

No unread posts 6502 bootstraping rom image

jdavis6809

4

709

Thu Jul 30, 2015 6:29 am

jac_goudsmit View the latest post

No unread posts Attachment(s) Excess Parts - Free - just pay the postage

8BIT

3

525

Tue Jul 28, 2015 2:27 pm

8BIT View the latest post

No unread posts 6522 power on state

JimDrew

7

814

Mon Jul 27, 2015 5:38 am

JimDrew View the latest post

No unread posts Attachment(s) 6502 and 74XX165 parallel in serial out shift register

i_r_on

3

1203

Tue Jul 21, 2015 11:19 pm

i_r_on View the latest post

No unread posts Attachment(s) '244 as level shifter?

Hobbit1972

11

1271

Tue Jul 21, 2015 10:24 pm

i_r_on View the latest post

No unread posts Attachment(s) Idea. Extension the stack.

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grzeg

19

1511

Mon Jul 20, 2015 8:31 pm

GARTHWILSON View the latest post

No unread posts NMOS 6502 and 6512 PHI the differences.

grzeg

6

748

Thu Jul 16, 2015 9:15 pm

BigEd View the latest post

No unread posts Why doesn't the CMP instruction affect the overflow flag?

lookaside

11

1088

Sat Jul 11, 2015 9:17 pm

lookaside View the latest post

No unread posts Attachment(s) Real 6502 with 1 MB virtual mode.

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grzeg

23

3609

Sat Jul 11, 2015 12:32 pm

Raymond Day View the latest post

No unread posts Attachment(s) Got me an Acorn System 1!

linker3000

11

1259

Fri Jul 10, 2015 8:31 pm

linker3000 View the latest post

No unread posts Intersil HIN232ACPZ vs Maxim MAX232

jonb

3

672

Thu Jul 09, 2015 3:27 pm

BigDumbDinosaur View the latest post

No unread posts 6502 and x86/MCS51 bus interface

Dajgoro

2

626

Sat Jul 04, 2015 5:31 pm

MichaelM View the latest post

No unread posts Computer museum seeks BBC Micro fixers

linker3000

1

433

Sat Jul 04, 2015 4:31 pm

BigEd View the latest post

No unread posts Attachment(s) Serial fun with the 6551

lenzjo

12

2682

Wed Jul 01, 2015 8:00 pm

BigDumbDinosaur View the latest post

No unread posts Looking for a PCB maker for large boards

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Oneironaut

21

1832

Wed Jun 24, 2015 1:34 am

Oneironaut View the latest post

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