HanJammer wrote on 2021-06-02, 12:46:
PC@LIVE wrote on 2021-05-30, 19:04:
I have selected various ISA cards for the motherboard with 386DX-40 (see photo), a 128MB SanDisk IDE-CF and CompactFlash adapter, a 16bit ISA controller with Acer M5105 chip and parallel and game serial ports, as sound card I have to choose one between AZTECH and Creativa SB16 Value (CT2770), as video card I will use an Octek with WD90C30-LR chip (Paradise), LAN card I would use a 3Com Etherlink III but I don't know if it works with old operating systems like windows3.X.
Nice. Replace this 70ns DRAM chips on the WD90C30 card with 45ns and you have pretty much the fastest ISA SVGA - those cards have amaizing performance (way better than ET4000 for example).
Ok thanks a lot for the info.
I did not know anything about this RAM upgrade, and it is very interesting because until some time ago I was looking for an ET4000, as a top ISA card, the only thing is to find those 45ns chips, maybe you can find them in other VGAs, I hope they don't cost. quite a lot, I'll take a look if I find them at a good price.
Tomorrow I think of replacing the keyboard connector in the 386DX motherboard, repairing the two interrupted tracks, and testing it on the bench with a VGA ISA Hualon (256KB), if all goes well and it works I start configuring it by choosing among the cards the ones I think are more suitable.
AMD 286-16 287-10 4MB HD 45MB VGA 256KB
AMD 386DX-40 Intel 387 8MB HD 81MB VGA 256KB
Cyrix 486DLC-40 IIT387-40 8MB VGA 512KB
AMD 5X86-133 16MB VGA VLB CL5428 2MB and many others
AMD K62+ 550 SOYO 5EMA+ and many others
AST Pentium Pro 200 MHz L2 256KB