On his blog Nils has posted for download ‘The last book of KIM’:
Ich habe in letzter Zeit Energie in dieses kleine (auf Deutsch geschriebene) Heftchen gelegt.
Es ist allen Enthusiasten gewidmet, denen, die es werden wollen, und denjenigen, die es waren. Es soll einen in der Computerhistorie bislang unterrepräsentierten Mikrocomputer ins rechte Licht rücken und seine Rolle bei der Entwicklung hin zum modernen Heimcomputer beschreiben.
Viel Spass
Webdoktor
I have two sets of KIM-1 ROMs. One set is the original KIM-1 dump by Dwight Elvey, in which the filler bytes (unused locations in the ROM) are filled with $00.
Alas the dumps by Dwight have a couple of bit errors and the NMI vector is wrong.
The other set is the result of assembling the source in which the assembler used $FF for the filler bytes. It makes sense to use $FF, since EPROMs can be programmed byte for byte ‘1’ later to ‘0’s.
Functionally the filler byte is irrelevant, so I present here the ROMs with filler byte 00 (corrected Dwight original KIM-1 dumps) and filler byte FF (assembly result).
6530-002 $1C00-$1FFF, filler bytes $FF 6530-002 ROM
6530-003 $1800-$1BFF, filler bytes $FF 6530-003 ROM
6530-002 $1C00-$1FFF, filler bytes $00 6530-002 ROM
6530-003 $1800-$1BFF, filler bytes $00 6530-003 ROM
Small update to KB-9 V1.2 and KB-6 V1.2: the NULL command is back, to ensure binary compatible tokenized saved Basic programs.
Now the USR location is the same in KB-9 V1.1 and V1.2, 2040 and 2041 (see Nils’ blog KIM-1 Basic and the use of assembler subroutines – netzherpes).
In KB-6 V1.2 it is 8254, 8255.
If you downloaded these , please do it again
Eduardo Casino has designed with modern tools, like Kicad and image software Inkscape a PCB for the KIM-1 which is as close as he could get to a Rev D.
This of course brought up the issue of how to get the 6530-002 and 6520-003 for this board, since those are unobtainable since a long time.
That can be solved with a FPGA. Or with a fast microcontroller like the Teensy, that is already proofed to be a good 6502 and more emulator (MCL65+).
As a first step Eduardo designed a PCB that is placed on top of the KIM-1. The 6530-002 and -003 need to be replaced with IC sockets, the PCB inserts in these sockets. It is like the Corsham 6530 replacement board, but now for both 6530s.
The style of the PCB is adapted to the style of original KIM-1 and Eduardo’s reproduction, with curved lines.
Details, gerbers, Kicad project, at Eduardo Casino’s github page.
Eduardo Casino has designed with modern tools, like Kicad and image software Inkscape a PCB for the KIM-1 which is as close as he could get to a Rev D.
Based upon images on the Revisions pages on this site.
On this forum64.de thread he published the design, and made all available on his github pages.
The PCB is an exact PCB replica of the KIM-1. It therefore requires 6530-002 and -003 RRIOTs, which are not available anymore (or use the Retrospy Technologies 6530 replacement boards).
Development for my old 8 bit retro SBC’s has become much easier with fast PCs and good tools. All cross development.
What took hours on my KIM-1: load editor form tape -edit source – save on tape (multiple tape files if big) – assemble form tape to tape – load binary from tape – run
can now be done very fast.
Powerful text editors, cross assembler, KIM-1 Simulator, seconds per iteration.
The only slow part remains: me!
More on my favorite toolchain here. 
