@hansotten.bsky.social
Royce Taft has a MACH-9 MMS Inc 6809 CPU Plug-in for AIM 65 and reverse engineered it.
He sent me his design to be published here.
retro.hansotten.nl/6502-sbc/aim...
He sent me his design to be published here.
retro.hansotten.nl/6502-sbc/aim...
February 9, 2026 at 10:07 AM
Royce Taft has a MACH-9 MMS Inc 6809 CPU Plug-in for AIM 65 and reverse engineered it.
He sent me his design to be published here.
retro.hansotten.nl/6502-sbc/aim...
He sent me his design to be published here.
retro.hansotten.nl/6502-sbc/aim...
The PLEASE package was published as two documents: INSTRUCTIONS and LISTING. In 2025 I received V2 of the LISTING and the Instruction. Jeff and Kenneth White received V1 of Vern Graner. All this including sources typed in now available here: retro.hansotten.nl/6502-sbc/kim...
February 3, 2026 at 4:02 PM
The PLEASE package was published as two documents: INSTRUCTIONS and LISTING. In 2025 I received V2 of the LISTING and the Instruction. Jeff and Kenneth White received V1 of Vern Graner. All this including sources typed in now available here: retro.hansotten.nl/6502-sbc/kim...
KIM1 MOD replica KIM-1 by Voyageur.
Battery powered. FM1808 for ROM and RAM keeps contents.
From Google group PAL 6502 computer
Read aboutKIM1Mod :http://retro.hansotten.nl/6502-sbc/kim-1-manuals-and-software/my-kim-1-family/kim-replicas-and-clones/kim-1-portable-version-made-by-voyageur6502/
Battery powered. FM1808 for ROM and RAM keeps contents.
From Google group PAL 6502 computer
Read aboutKIM1Mod :http://retro.hansotten.nl/6502-sbc/kim-1-manuals-and-software/my-kim-1-family/kim-replicas-and-clones/kim-1-portable-version-made-by-voyageur6502/
January 30, 2026 at 6:12 PM
KIM1 MOD replica KIM-1 by Voyageur.
Battery powered. FM1808 for ROM and RAM keeps contents.
From Google group PAL 6502 computer
Read aboutKIM1Mod :http://retro.hansotten.nl/6502-sbc/kim-1-manuals-and-software/my-kim-1-family/kim-replicas-and-clones/kim-1-portable-version-made-by-voyageur6502/
Battery powered. FM1808 for ROM and RAM keeps contents.
From Google group PAL 6502 computer
Read aboutKIM1Mod :http://retro.hansotten.nl/6502-sbc/kim-1-manuals-and-software/my-kim-1-family/kim-replicas-and-clones/kim-1-portable-version-made-by-voyageur6502/
PicoSYM, a SYM-1 emulator on a Raspberry Pico
Emulation of Synertek SYM-1 on a Pico
By andysa on 6502.org
Read about it: retro.hansotten.nl/6502-sbc/syn...
PicoSYM emulates a SYM-1 with the Supermon V1.1 Monitor, Basic, RAE Assembler & Editor and 1541DOS at the typical addresses.
.
Emulation of Synertek SYM-1 on a Pico
By andysa on 6502.org
Read about it: retro.hansotten.nl/6502-sbc/syn...
PicoSYM emulates a SYM-1 with the Supermon V1.1 Monitor, Basic, RAE Assembler & Editor and 1541DOS at the typical addresses.
.
January 28, 2026 at 3:16 PM
PicoSYM, a SYM-1 emulator on a Raspberry Pico
Emulation of Synertek SYM-1 on a Pico
By andysa on 6502.org
Read about it: retro.hansotten.nl/6502-sbc/syn...
PicoSYM emulates a SYM-1 with the Supermon V1.1 Monitor, Basic, RAE Assembler & Editor and 1541DOS at the typical addresses.
.
Emulation of Synertek SYM-1 on a Pico
By andysa on 6502.org
Read about it: retro.hansotten.nl/6502-sbc/syn...
PicoSYM emulates a SYM-1 with the Supermon V1.1 Monitor, Basic, RAE Assembler & Editor and 1541DOS at the typical addresses.
.
Which transistors are used int he KIM-1 and clones?
The LED driver and serial circuit require transistors.
MOS used 2N5371 and 2N5375, in later KIM-1s a wider variety. A question in forum64.de in the Nachbau KIM-1 thread made me look at my KIM-1 retro.hansotten.nl/6502-sbc/kim...
The LED driver and serial circuit require transistors.
MOS used 2N5371 and 2N5375, in later KIM-1s a wider variety. A question in forum64.de in the Nachbau KIM-1 thread made me look at my KIM-1 retro.hansotten.nl/6502-sbc/kim...
January 18, 2026 at 3:11 PM
Which transistors are used int he KIM-1 and clones?
The LED driver and serial circuit require transistors.
MOS used 2N5371 and 2N5375, in later KIM-1s a wider variety. A question in forum64.de in the Nachbau KIM-1 thread made me look at my KIM-1 retro.hansotten.nl/6502-sbc/kim...
The LED driver and serial circuit require transistors.
MOS used 2N5371 and 2N5375, in later KIM-1s a wider variety. A question in forum64.de in the Nachbau KIM-1 thread made me look at my KIM-1 retro.hansotten.nl/6502-sbc/kim...
50 years of KIM-1!
The birth can be traced to January 1976.
The sale ended in 1981. KIM is Dead!!! Long KIM!!!
The birth can be traced to January 1976.
The sale ended in 1981. KIM is Dead!!! Long KIM!!!
January 16, 2026 at 5:53 PM
50 years of KIM-1!
The birth can be traced to January 1976.
The sale ended in 1981. KIM is Dead!!! Long KIM!!!
The birth can be traced to January 1976.
The sale ended in 1981. KIM is Dead!!! Long KIM!!!
Found it. Computer! June 1981 Issue 13 Page 34
KIM is Dead!!! Long Live KIM!!!
KIM is Dead!!! Long Live KIM!!!
January 16, 2026 at 3:43 PM
Found it. Computer! June 1981 Issue 13 Page 34
KIM is Dead!!! Long Live KIM!!!
KIM is Dead!!! Long Live KIM!!!
50 years of KIM-1: KIM Clones
Vince Briel was the first with the MicroKIM. replacement of the 6530 RRIOT with a 6532 RIOT and an external ROM. The idea from Ruud Baltissen. The PAL-1 and PAL-2 still available
Top Briel MicroKIM, Corsham KIM Clone and PAL-2.
Bottom PAL-1 , Corsham breadboard.
Vince Briel was the first with the MicroKIM. replacement of the 6530 RRIOT with a 6532 RIOT and an external ROM. The idea from Ruud Baltissen. The PAL-1 and PAL-2 still available
Top Briel MicroKIM, Corsham KIM Clone and PAL-2.
Bottom PAL-1 , Corsham breadboard.
January 14, 2026 at 2:57 PM
50 years of KIM-1: KIM Clones
Vince Briel was the first with the MicroKIM. replacement of the 6530 RRIOT with a 6532 RIOT and an external ROM. The idea from Ruud Baltissen. The PAL-1 and PAL-2 still available
Top Briel MicroKIM, Corsham KIM Clone and PAL-2.
Bottom PAL-1 , Corsham breadboard.
Vince Briel was the first with the MicroKIM. replacement of the 6530 RRIOT with a 6532 RIOT and an external ROM. The idea from Ruud Baltissen. The PAL-1 and PAL-2 still available
Top Briel MicroKIM, Corsham KIM Clone and PAL-2.
Bottom PAL-1 , Corsham breadboard.
Not only Edison, but the Solo OS with Concurrent Pascal by Per Brinch Hansen, can run in simh:
pascal.hansotten.com/2026/01/13/s...
pascal.hansotten.com/2026/01/13/s...
January 14, 2026 at 11:19 AM
Not only Edison, but the Solo OS with Concurrent Pascal by Per Brinch Hansen, can run in simh:
pascal.hansotten.com/2026/01/13/s...
pascal.hansotten.com/2026/01/13/s...
50 years of KIM-1 and me
retro.hansotten.nl/50-years-of-...
I have collected some KIM-1's over the years. The first KIM-1 in 1978, and now I have nine original KIM-1s, from first edition to Rev A, B, D, E , 2x F, 2xG.
And several reproductions with 6532's as replacements.
retro.hansotten.nl/50-years-of-...
I have collected some KIM-1's over the years. The first KIM-1 in 1978, and now I have nine original KIM-1s, from first edition to Rev A, B, D, E , 2x F, 2xG.
And several reproductions with 6532's as replacements.
January 14, 2026 at 10:30 AM
50 years of KIM-1 and me
retro.hansotten.nl/50-years-of-...
I have collected some KIM-1's over the years. The first KIM-1 in 1978, and now I have nine original KIM-1s, from first edition to Rev A, B, D, E , 2x F, 2xG.
And several reproductions with 6532's as replacements.
retro.hansotten.nl/50-years-of-...
I have collected some KIM-1's over the years. The first KIM-1 in 1978, and now I have nine original KIM-1s, from first edition to Rev A, B, D, E , 2x F, 2xG.
And several reproductions with 6532's as replacements.
The Edison system, language and OS.
Per Brinch Hansen, the master of simplicity in IT. Book from 1982, disks dumped in 2025, files extracted in 2026. And with simh you can run the Edison system.
pascal.hansotten.com/per-brinch-h...
Per Brinch Hansen, the master of simplicity in IT. Book from 1982, disks dumped in 2025, files extracted in 2026. And with simh you can run the Edison system.
pascal.hansotten.com/per-brinch-h...
January 10, 2026 at 2:53 PM
The Edison system, language and OS.
Per Brinch Hansen, the master of simplicity in IT. Book from 1982, disks dumped in 2025, files extracted in 2026. And with simh you can run the Edison system.
pascal.hansotten.com/per-brinch-h...
Per Brinch Hansen, the master of simplicity in IT. Book from 1982, disks dumped in 2025, files extracted in 2026. And with simh you can run the Edison system.
pascal.hansotten.com/per-brinch-h...
Faithful replica by Eduardo Casino of the K‑1002 8‑bit audio Digital‑to‑Analog Converter card for the KIM‑1, SYM‑1, and AIM‑65 computers, originally designed by MTU in the late ’70s.
github.com/eduardocasin...
github.com/eduardocasin...
January 5, 2026 at 9:43 AM
Faithful replica by Eduardo Casino of the K‑1002 8‑bit audio Digital‑to‑Analog Converter card for the KIM‑1, SYM‑1, and AIM‑65 computers, originally designed by MTU in the late ’70s.
github.com/eduardocasin...
github.com/eduardocasin...
The KIM UNO, the little cheap KIM-1 hardware emulator needed some information added. Photos, links, text.
Like the recently acquired KIM UNO from retro4004bits, alternative firmware by Willem Aandewiel for better LED display and Keypad control.
retro.hansotten.nl/6502-sbc/kim...
Like the recently acquired KIM UNO from retro4004bits, alternative firmware by Willem Aandewiel for better LED display and Keypad control.
retro.hansotten.nl/6502-sbc/kim...
January 1, 2026 at 1:26 PM
The KIM UNO, the little cheap KIM-1 hardware emulator needed some information added. Photos, links, text.
Like the recently acquired KIM UNO from retro4004bits, alternative firmware by Willem Aandewiel for better LED display and Keypad control.
retro.hansotten.nl/6502-sbc/kim...
Like the recently acquired KIM UNO from retro4004bits, alternative firmware by Willem Aandewiel for better LED display and Keypad control.
retro.hansotten.nl/6502-sbc/kim...
The MCS6530-005 was known to me only by some lines in MOS pricelist and a remark in an OSI appnote as a 6530 without ROM.
Today I received a scan of a MOS Technology sheet with the chip equations of the MCS6530-044 and MCS6530-005 (thanks Scott Barnes!).
No CS1 and CS2, just I/O ports PB5 and PB6.
Today I received a scan of a MOS Technology sheet with the chip equations of the MCS6530-044 and MCS6530-005 (thanks Scott Barnes!).
No CS1 and CS2, just I/O ports PB5 and PB6.
December 27, 2025 at 10:37 AM
The MCS6530-005 was known to me only by some lines in MOS pricelist and a remark in an OSI appnote as a 6530 without ROM.
Today I received a scan of a MOS Technology sheet with the chip equations of the MCS6530-044 and MCS6530-005 (thanks Scott Barnes!).
No CS1 and CS2, just I/O ports PB5 and PB6.
Today I received a scan of a MOS Technology sheet with the chip equations of the MCS6530-044 and MCS6530-005 (thanks Scott Barnes!).
No CS1 and CS2, just I/O ports PB5 and PB6.
And now the KIM-1 Simulator can also use a serial terminal, external or a terminal emulator such as Teraterm, Minicon, Putty etc on the same PC with a null modem eliminator .
retro.hansotten.nl/6502-sbc/kim...
retro.hansotten.nl/6502-sbc/kim...
December 26, 2025 at 11:22 AM
And now the KIM-1 Simulator can also use a serial terminal, external or a terminal emulator such as Teraterm, Minicon, Putty etc on the same PC with a null modem eliminator .
retro.hansotten.nl/6502-sbc/kim...
retro.hansotten.nl/6502-sbc/kim...
The Jolt/SuperJolt/TIM Simulator got serial input/output!
USe with an an extermnal terminal like VT100 (or PC).
Or local terminal emulator with a virtual null modem, com0com on Windows, socat on Linux.
retro.hansotten.nl/6502-sbc/653...
USe with an an extermnal terminal like VT100 (or PC).
Or local terminal emulator with a virtual null modem, com0com on Windows, socat on Linux.
retro.hansotten.nl/6502-sbc/653...
December 24, 2025 at 6:36 PM
The Jolt/SuperJolt/TIM Simulator got serial input/output!
USe with an an extermnal terminal like VT100 (or PC).
Or local terminal emulator with a virtual null modem, com0com on Windows, socat on Linux.
retro.hansotten.nl/6502-sbc/653...
USe with an an extermnal terminal like VT100 (or PC).
Or local terminal emulator with a virtual null modem, com0com on Windows, socat on Linux.
retro.hansotten.nl/6502-sbc/653...
The Jolt by Micro Associates, Inc, is one of the first 6502 systems. SBC with 6502, 6821 PIA RRIOT 6530-004 512 byte RAM, a serial interface. The DEMON software 1K OS.
Expansion cards 2x PIA, 2K EPROM, Power Supply 4K RAM
Tiny Basic, Resident Assembler.
retro.hansotten.nl/6502-sbc/jol...
Expansion cards 2x PIA, 2K EPROM, Power Supply 4K RAM
Tiny Basic, Resident Assembler.
retro.hansotten.nl/6502-sbc/jol...
December 17, 2025 at 10:39 AM
The Jolt by Micro Associates, Inc, is one of the first 6502 systems. SBC with 6502, 6821 PIA RRIOT 6530-004 512 byte RAM, a serial interface. The DEMON software 1K OS.
Expansion cards 2x PIA, 2K EPROM, Power Supply 4K RAM
Tiny Basic, Resident Assembler.
retro.hansotten.nl/6502-sbc/jol...
Expansion cards 2x PIA, 2K EPROM, Power Supply 4K RAM
Tiny Basic, Resident Assembler.
retro.hansotten.nl/6502-sbc/jol...
All what is known about the MOS Technology 6530 and 6532 from 1975 . retro.hansotten.nl/6502-sbc/653...
Used in KIM-1, Jolt, Chessmate, Pinball machines, Commodore diskdrives.
Testing and dumping the ROM in the 6530 with the Backbit Chiptester Pro V2:
Used in KIM-1, Jolt, Chessmate, Pinball machines, Commodore diskdrives.
Testing and dumping the ROM in the 6530 with the Backbit Chiptester Pro V2:
November 25, 2025 at 12:51 PM
All what is known about the MOS Technology 6530 and 6532 from 1975 . retro.hansotten.nl/6502-sbc/653...
Used in KIM-1, Jolt, Chessmate, Pinball machines, Commodore diskdrives.
Testing and dumping the ROM in the 6530 with the Backbit Chiptester Pro V2:
Used in KIM-1, Jolt, Chessmate, Pinball machines, Commodore diskdrives.
Testing and dumping the ROM in the 6530 with the Backbit Chiptester Pro V2:
#ChuckPeddleDay
It took some time to finally publish this program for the KIM-1 and today is a good day for it. Udo Juerss is the author.
KIM-1 Marquee retro.hansotten.nl/kim-1-marque/ source and binary.
Shows running text on a KIM-1 LED display
It took some time to finally publish this program for the KIM-1 and today is a good day for it. Udo Juerss is the author.
KIM-1 Marquee retro.hansotten.nl/kim-1-marque/ source and binary.
Shows running text on a KIM-1 LED display
November 25, 2025 at 11:32 AM
#ChuckPeddleDay
It took some time to finally publish this program for the KIM-1 and today is a good day for it. Udo Juerss is the author.
KIM-1 Marquee retro.hansotten.nl/kim-1-marque/ source and binary.
Shows running text on a KIM-1 LED display
It took some time to finally publish this program for the KIM-1 and today is a good day for it. Udo Juerss is the author.
KIM-1 Marquee retro.hansotten.nl/kim-1-marque/ source and binary.
Shows running text on a KIM-1 LED display
cott Lombard started many years ago on a replica of the Jolt. Quite a challenge, since only photos are known of the Jolt.
He succeeded in finishing a working replica
retro.hansotten.nl/6502-sbc/jol...
He also made RAM and ROM cards, and made a Tiny Basic Enhancement package,
He succeeded in finishing a working replica
retro.hansotten.nl/6502-sbc/jol...
He also made RAM and ROM cards, and made a Tiny Basic Enhancement package,
November 24, 2025 at 11:17 AM
cott Lombard started many years ago on a replica of the Jolt. Quite a challenge, since only photos are known of the Jolt.
He succeeded in finishing a working replica
retro.hansotten.nl/6502-sbc/jol...
He also made RAM and ROM cards, and made a Tiny Basic Enhancement package,
He succeeded in finishing a working replica
retro.hansotten.nl/6502-sbc/jol...
He also made RAM and ROM cards, and made a Tiny Basic Enhancement package,
KIM-1 Rev D building progress.
All passive components acquired and soldered on.
Keyboard assembled, will be connected via low profile pin connector.
Next step is testing power distribution to all IC sockets.
Then the Reset and NMI circuits with the 556 timer.
All passive components acquired and soldered on.
Keyboard assembled, will be connected via low profile pin connector.
Next step is testing power distribution to all IC sockets.
Then the Reset and NMI circuits with the 556 timer.
November 9, 2025 at 4:46 PM
KIM-1 Rev D building progress.
All passive components acquired and soldered on.
Keyboard assembled, will be connected via low profile pin connector.
Next step is testing power distribution to all IC sockets.
Then the Reset and NMI circuits with the 556 timer.
All passive components acquired and soldered on.
Keyboard assembled, will be connected via low profile pin connector.
Next step is testing power distribution to all IC sockets.
Then the Reset and NMI circuits with the 556 timer.
Another revision of my observations on KIM-1 revisions changes.
The keyboard changed from Rev B to Rev D, requiring new holes in the PCB and so some traces had to move. Note the change in style of the PCB layout, not curved but straighter lines.
The keyboard changed from Rev B to Rev D, requiring new holes in the PCB and so some traces had to move. Note the change in style of the PCB layout, not curved but straighter lines.
November 3, 2025 at 6:30 PM
Another revision of my observations on KIM-1 revisions changes.
The keyboard changed from Rev B to Rev D, requiring new holes in the PCB and so some traces had to move. Note the change in style of the PCB layout, not curved but straighter lines.
The keyboard changed from Rev B to Rev D, requiring new holes in the PCB and so some traces had to move. Note the change in style of the PCB layout, not curved but straighter lines.
and this my second s-vhs
October 24, 2025 at 12:49 PM
and this my second s-vhs
this was my first video camera. Video 8
October 24, 2025 at 12:48 PM
this was my first video camera. Video 8
First KIM-1 50 years! Now I am building a KIM-1 myself! Rev E reference, the BOM is excellent!
I am not aiming for an exact replica, I want to test things with it, so IC sockets.
PCB KIM-1 Rev D and BOM by Eduardo Casino github.com/eduardocasin...
Parts mostly from Mouser, and from my old stock.
I am not aiming for an exact replica, I want to test things with it, so IC sockets.
PCB KIM-1 Rev D and BOM by Eduardo Casino github.com/eduardocasin...
Parts mostly from Mouser, and from my old stock.
October 22, 2025 at 4:57 PM
First KIM-1 50 years! Now I am building a KIM-1 myself! Rev E reference, the BOM is excellent!
I am not aiming for an exact replica, I want to test things with it, so IC sockets.
PCB KIM-1 Rev D and BOM by Eduardo Casino github.com/eduardocasin...
Parts mostly from Mouser, and from my old stock.
I am not aiming for an exact replica, I want to test things with it, so IC sockets.
PCB KIM-1 Rev D and BOM by Eduardo Casino github.com/eduardocasin...
Parts mostly from Mouser, and from my old stock.