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GeneralDoes this mean I get weekends off from the human labor camp? Pin
honey the codewitch18-Feb-20 13:09
mvahoney the codewitch18-Feb-20 13:09 
GeneralRe: Does this mean I get weekends off from the human labor camp? Pin
Mark_Wallace18-Feb-20 13:41
MemberMark_Wallace18-Feb-20 13:41 
GeneralRe: Does this mean I get weekends off from the human labor camp? Pin
honey the codewitch18-Feb-20 14:10
mvahoney the codewitch18-Feb-20 14:10 
GeneralRe: Does this mean I get weekends off from the human labor camp? Pin
Mark_Wallace18-Feb-20 20:18
MemberMark_Wallace18-Feb-20 20:18 
GeneralRe: Does this mean I get weekends off from the human labor camp? Pin
Super Lloyd18-Feb-20 16:17
MemberSuper Lloyd18-Feb-20 16:17 
JokeRe: Does this mean I get weekends off from the human labor camp? Pin
Daniel Pfeffer18-Feb-20 22:31
professionalDaniel Pfeffer18-Feb-20 22:31 
JokeRe: Does this mean I get weekends off from the human labor camp? Pin
Nelek19-Feb-20 2:56
protectorNelek19-Feb-20 2:56 
GeneralHey, PC! Listen when the Zwölf is talking to you! Pin
CodeWraith18-Feb-20 11:44
MemberCodeWraith18-Feb-20 11:44 
I mourn the death of my old notebook that I used to toast EPROMs and run the terminal emulation for the old Elf. The power supply probably died when I moved it over to the desk with the Zwölf. Now an old desktop PC does its job. It also had been slumbering under the desk for years and collected dust, but it at least still has a parallel port (for the EPROMs) and a serial port (for the Zwölf).

Here is a picture[^] of my development setup on the PC, running Zwölf's first real program in emulation. The emulator is still really helpful, because it can very accurately emulate the software driven serial I/O. Unfortunately both the assembler and the emulator are not going to support Zwölf's modest memory expansion.

Zwölf now has some useful I/O, at the cost of one cheap MAX232, the rest is software. The program still needs more features, but the I/O routines already work fine, on the emulator and on the real thing. Now I have a formula to calculate the timing constants for any reasonable baud rate and clock frequency. I love RISC processors. They make such things really easy.

Little Zwölf has also already been showing some muscles. It tested its 32k RAM with all 256 possible values. At 1 MHz it needed about 22 minutes to check out 32k 256 times. Good news that the RAM is ok, but 22 minutes is quite a wait. It also makes the memory expansion a little questionable. So I exchanged the 1 MHz oscillator for a 6 MHz oscillator. That's 120% of the max. clock frequency. The processor did not even get warm and also had no problems with the noisy breadboard. And then it completed the memory test in under four minutes. Yes, CMOS is slow. Smile | :)
I have lived with several Zen masters - all of them were cats.

His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.

GeneralRe: Hey, PC! Listen when the Zwölf is talking to you! Pin
Mike Hankey18-Feb-20 12:41
professionalMike Hankey18-Feb-20 12:41 
PraiseRe: Hey, PC! Listen when the Zwölf is talking to you! Pin
Kornfeld Eliyahu Peter18-Feb-20 20:29
mveKornfeld Eliyahu Peter18-Feb-20 20:29 
GeneralRe: Hey, PC! Listen when the Zwölf is talking to you! Pin
CodeWraith18-Feb-20 21:37
MemberCodeWraith18-Feb-20 21:37 
GeneralOver 6,000 pages, but all you needed (1998) Pin
raddevus18-Feb-20 8:24
mvaraddevus18-Feb-20 8:24 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
Mike Hankey18-Feb-20 8:49
professionalMike Hankey18-Feb-20 8:49 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
Marc Clifton18-Feb-20 9:38
mvaMarc Clifton18-Feb-20 9:38 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
Mike Hankey18-Feb-20 9:51
professionalMike Hankey18-Feb-20 9:51 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
CPallini18-Feb-20 10:18
mveCPallini18-Feb-20 10:18 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
Jörgen Andersson18-Feb-20 23:28
professionalJörgen Andersson18-Feb-20 23:28 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
Slow Eddie19-Feb-20 5:15
professionalSlow Eddie19-Feb-20 5:15 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
Mark_Wallace18-Feb-20 9:12
MemberMark_Wallace18-Feb-20 9:12 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
raddevus18-Feb-20 9:36
mvaraddevus18-Feb-20 9:36 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
CPallini18-Feb-20 10:14
mveCPallini18-Feb-20 10:14 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
raddevus18-Feb-20 10:34
mvaraddevus18-Feb-20 10:34 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
Mark_Wallace18-Feb-20 11:59
MemberMark_Wallace18-Feb-20 11:59 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
CPallini18-Feb-20 20:56
mveCPallini18-Feb-20 20:56 
GeneralRe: Over 6,000 pages, but all you needed (1998) Pin
Greg Utas18-Feb-20 10:18
professionalGreg Utas18-Feb-20 10:18 

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