Re: The 286 Laptop Restoration Thread
Posted on 2015-09-05, 06:05
This battery is a 3.6V NiMH Rechargable. (3x1.2V in series) http://i858.photobucket.com/albums/ab148/city … 0902_232603.jpg
Re: VL/EISA Pentium (turbocharged)
Posted on 2015-09-03, 16:55
Damn, so no way to add microcode support 😒
Re: USB/PS2/SERIAL optical mouse solutions for 386/486 systems
Posted on 2015-09-03, 16:48
(Picture by hofinger / dosforum.de )
Re: VL/EISA Pentium (turbocharged)
Posted on 2015-09-02, 16:10
If you got AWARD Bios you can Patch CPU Support yourself. With BP Bios Patcher.
Re: PS/2 to Microsoft Serialmouse Adapter Converter
Posted on 2015-08-31, 11:24
Hi, A Kit will cost ~10 Euro + Shipping to your Country. (Origin: Germany) MCU preprogrammed with Bootloader and Firmware. I'm not making profit with this stuff, so everything will take a bit time to happen. i will ask you to pay when the pcbs arrive in few weeks/1-3 months i'm a bit short on money …
Re: PS/2 to Microsoft Serialmouse Adapter Converter
Posted on 2015-08-20, 12:06
i'm going to order another batch of pcbs. so i have soon a few avaible (2 months +/-) groupbuy of parts possible. The PCB has little Changes: - Mouse can switched on/off via Firmware over Transistor. - Bootloader Support for Firmware Update over Serialport. ( Firmware Update working under Win9x/XP …
Re: Of integrated graphics and P1-era systems: Unfindable CHIPS drivers
Posted on 2015-08-20, 11:57
http://www.navozhdeniye.narod.ru/vbemp.htm And 9x: ftp://alter.org.ua/incoming/soft/vbe/win9x/vbe9x.htm Try this Driver 😀
Re: Active adapter to use USB keyboard on motherboard with only ps/2
Posted on 2015-08-20, 11:56
A Nec Chipset Card will be fine, even in older PCI Mainboards. Works even in Non PC Systems, Sun Ultra, RS/6K And my PCi 2.0 486 Mainboard. But without BIOS Support, a USB Keyboard is almost useless.
Re: The Ultimate 686 Benchmark Comparison
Posted on 2015-08-18, 10:19
Why is a K6 called 686 ? its not fully P6 combatible Its just a i586 Core. Like 6x86, K6-2, K6-3 etc.
Re: XT/CGA laptop dissection
Posted on 2015-08-16, 16:23
https://groups.google.com/d/msg/comp.sys.cbm/ … Sg/QGKgBdYwPkYJ edit: fixed link
Re: XT/CGA laptop dissection
Posted on 2015-08-16, 16:03
The Schematic is RGB Digital to Analog Signals so you can Input to a GBS 8220 Video Converter Board or AD724 NTSC/PAL Encoder. http://www.jammaboards.com/arcade_manuals/GBS-8220_CGA_to_VGA_HD-Converter.pdf You can even upgrade your laptop to backlight, by adding EL Foil if this is possible (Space …
Re: Speedsys 4.78 weird MHz
Posted on 2015-08-16, 15:59
This is just a Bug. Speedsys shows only 17Mhz but my DRx2 Cyrix 486 was running 50Mhz (2x25). Failling Powersupply killed cpu 😒
Re: XT/CGA laptop dissection
Posted on 2015-08-11, 14:10
Another Idea is using a AD724 RGB to NTSC/Pal Encoder Chip 😀 This Circuit combined with the AD724 Circuit.
Re: Interference on simple AdLib clone, any ideas?
Posted on 2015-08-11, 14:03
Yes Audio Signal on Pin 3 of LM386, Second Connection to Ground. Check if there is Hum. If yes, bad. If no Hum is present, the LM386 needs better decoupling. The LM386 is known for weird Sound.. its better used for Doorbell 😀
Re: Optimizing a 386: questions
Posted on 2015-08-10, 09:52
The Trident used in this Machine will prevent the 386 from unleashing its Power in VGA. The 9000 is slow, a good choice for a 286 CPU or 8088/8086/V20/V30 in 8bit Mode. There are 32bit 1Mb Ram Versions of the Trident Card, which equal to ET4000/Cirrus Logic GD5422/GD5424. They where later …
Re: RAM on a 286 motherboard
Posted on 2015-08-02, 18:05
I'm sure the -10 on your DRAM means 100ns 😀
Re: Best PCI graphics card for AMD Opteron 180 system
Posted on 2015-07-27, 11:31
feiopa: I use a 8400GS 256Mb PCIe in a Dual Coppermine on a PCIe to PCI Adapter, even a 8800GT 512Mb works 😀
Re: Interference on simple AdLib clone, any ideas?
Posted on 2015-07-26, 10:52
Grab the Signal on Pin3 of LM386 and check if noise is present. This is unamplified Signal. The LM386 is a trashy amp.
Re: How to enable cache on TI SXL-40 CPU?
Posted on 2015-07-25, 20:07
http://www.philscomputerlab.com/cyrix-486dlc.html This tools should work for the TI CPU too.
Re: Best DOS version for a late 486/early Pentium system?
Posted on 2015-07-25, 17:28
It has nice Utilities which automatic optimize your Startup Files and load everything it can up. But later MS came up with memmaker which does almost the same Job.
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