Marcel Flipse
ID:
1040
First Name:
Marcel
Last Name:
Flipse
Last Change:
2019-10-25
Number of Files:
10 (145th most prolific)
Number of Downloads:
93,811 (96th most downloaded)
Do It Yourself RAM Card
(
details
)
48
ENG
989KB
Schematics for building a RAM card in Adobe PDF format. Also includes photos and a screenshot of one possible PCB layout.
By
Marcel Flipse
.
1999/05/12
External Serial Buffer
(
details
)
49/50
ENG
413KB
Fix for the buggy serial port buffer in early HP 49Gs without requiring opening the calculator. In Adobe PDF format.
By
Marcel Flipse
.
2000/02/09
HP 48 "X-Ray"
(
details
)
48
334KB
A simulated X-ray image of the 48G-series circuit board with all components removed. Created to aid in the creation of the circuit schematic.
By
Marcel Flipse
.
2017/05/28
HP 48 Bottom
(
details
)
48
384KB
Very high quality scan of the bottom of the 48G's motherboard with most components removed.
By
Marcel Flipse
.
1999/05/22
HP 48 Schematics 1.6
(
details
)
48
ENG
286KB
Adobe Acrobat PDF file of the HP 48's schematics (1.6) and circuit board diagram (1.0).
By
Marcel Flipse
.
2019/10/25
HP 48 Top
(
details
)
48
432KB
Very high quality scan of the top of the 48G's motherboard with most components removed.
By
Marcel Flipse
.
1999/05/22
HP SoundBooster
(
details
)
48
ENG
623KB
Schematics for a combination 1MB RAM card and sound card. In Adobe PDF format.
By
Marcel Flipse
.
2000/01/28
Infrared Adapter 1.2
(
details
)
49/50
ENG
2901KB
Information about an adapter to convert the serial port into an infrared port. I guess this is proof that HP was incorrect about needing an additional high-power pin to support IR.
By
Marcel Flipse
.
2001/06/24
Inside the HP 49G
(
details
)
49/50
ENG
581KB
Huge high-quality photo of the circuit board in the HP 49G.
By
Marcel Flipse
.
1999/10/06
Serial Port Bug
(
details
)
49/50
ENG
280KB
Explains a hardware bug in the serial port of the 49 and shows how to fix it.
By
Marcel Flipse
.
1999/12/31
Part of the
HP Calculator Archive
,
Copyright
1997-2023
Eric Rechlin
.