The new CodeWarrior suites are available at the following costs
(USD) on all Freescale architectures currently supported by
CodeWarrior Development Studio:

   --  Professional suite: Includes all full featured development
        tools for the highest level of product functionality - $4995
        Perpetual License / $1995 Annual Subscription

   --  Standard suite: Provides access to all selectively featured
        development tools - $2495 Perpetual License / $995 Annual
        Subscription

   --  Basic suite: Includes all necessary CodeWarrior tools for
        Compiler Upgrades, Linux Applications Editions and Flash
        Programmers - $995 Perpetual License / $395 Annual
        Subscription

   --  Special Edition: Feature limited tools - freely available

   For detailed information about each CodeWarrior suite, visit
www.freescale.com/codewarrior.

gdb and simulavr are the backend of AVR studio. With gdb and simulavr you can do the same things you can do with AVR studio. Ubuntu has in its repository some ready packages. Look for gcc-avr, binutils-avr, avr-libc, avrdude, gdb-avr, simulavr. Just install them, that's it Cool The downside is that you don't have a GUI, you probably need to simulate your code from the command line.

Intel 4004 microprocessor historical materials
 
The work licensed under this license is limited to the following:

4004 schematic
(PDF 6.28MB)

4004 mask layout files

    * 4004002 (JPG 225KB)
    * 4004008 (JPG 64KB)
    * 4004013 (JPG 153KB)
    * 4004018 (JPG 57KB)
    * 4004023 (JPG 168KB)
    * 4004029 (JPG 170KB)

4004 manual MSC4 (1974)
(PDF 29.4MB)

4004 datasheet (1987)
(PDF 3MB) 

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Welcome to Microwind and Dsch information page

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% /home/cs1721/bin/emu /home/cs1721/public_html/05s2/emu/examples/iota.hex
Emu Reference Implementation v0.?
> program
0000: e000 LDI R16,0
0001: e081 LDI R24,1
0002: 2fa0 MOV R26,R16
0003: e7f0 LDI R31,112
0004: e0e0 LDI R30,0
0005: 9509 ICALL
0006: e011 LDI R17,1
0007: 0f01 ADD R16,R17
0008: e614 LDI R17,100
0009: 1b10 SUB R17,R16
000a: f7b1 BRBC 1,-10
000b: e080 LDI R24,0
000c: e7f0 LDI R31,112
000d: e0e0 LDI R30,0
000e: 9509 ICALL
> registers
PC=0000 SP=1100 SR=[C=0,Z=0,N=0,V=0]
r00-r0f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
r10-r1f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> step
0000: e000 LDI R16,0
PC=0001 SP=1100 SR=[C=0,Z=0,N=0,V=0]
r00-r0f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
r10-r1f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> run
0
1
...
8
9
> restart
> run
0
1
...
9
> registers
PC=000f SP=1100 SR=[C=0,Z=1,N=0,V=0]
r00-r0f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
r10-r1f 0a 00 00 00 00 00 00 00 00 00 09 00 00 00 00 70

For something even smaller, download miniPicoLisp.tgz. It is a minimal version, without support for databases, UTF-8, bignums, IPC, networking and other system-dependent functions. A kind of "pure" Pico Lisp (not "pure Lisp"!). It supports the full Pico Lisp language, but runs faster, and uses even less memory space. It should also not be restricted to Unix. In addition, it compiles and runs also on 64-bit systems.

Jon Kleiser wrote an OpenGL library gl.tgz, and a Chinese Checkers program running on top of it.

Example: sum of first 4 integers.

sum = 0;
for (i = 1; i <= 4; ++i)
   sum += i*i;

sum = 0;
i = 1;
loop:
   if (i == 5) goto end;;
   sum = sum + i;
   i = i + 1;
goto loop;
end:

; sum in R16
; i in R17
; R18,R19 used for temporary values
    LDI R16, 0
    LDI R17, 1
    LDI R18, 5
    SUB R18, R17
    BRBS 1, 22
    ADD R16, R17
    LDI R19, 1
    ADD R17, R19
    JMP 2
    SLEEP