Allschwil Meeting 2004
----------------------

Sorry, I don't have the original script from this meeting any more.


1) Showing the state of emulator development

Emu28		v1.05
Emu42		v1.01
Emu48		v1.35
Emu42PPC	v1.01
Emu48PPC	v1.00

New to the Allschwil Meeting 2003 are the PPC versions.


2) Different emulations of pioneer calcs

Running a HP17B, 17BII, HP19BII, HP27S, HP28S and a HP42S in Emu42 v1.01
and a HP28S and a HP42S in Emu42PPC v1.01 with QVGA resolution. VGA
resolution was introduced with Emu42PPC v1.02 in spring 2005.


3) Presentation of his modified HP-28S with RS-232C interface

The presentation consists of two parts:

a) Removing the IR-transmitter LED and connecting the REDEYE24.PDF
interface to the two pins of the IR-LED (Bat+, Signal) and an additional
wire to Bat-.

b) The assembler software running on the HP28 and an ASCII terminal
program on the PC.

From this project the assembler souces for the HP28S still exist, the
last modifications done in summer 2007.

Sorry, there's no tutorial how to assemble the sources and how to get the
created binary code into the HP28S as "System Object".

The CLAMSHEL.TXT file in the https://hp.giesselink.com/Emu28/CPROMUPL.ZIP
archive may give you some tips how to enter assembler code into a HP28S.

The archive with the adapter schematic and the source code files can be
downloaded here:

https://hp.giesselink.com/Meetings/Allschwil2004/HP28SER.ZIP

(c) Christoph Gießelink, September 2019