Speedy UMC Green CPU 40 MHz / UMC 418 VLB SVGA/IDE / MB-1433UIV \ VOGONS

Speedy UMC Green CPU 40 MHz / UMC 418 VLB SVGA/IDE / MB-1433UIV

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First post, by jakethompson1

Posted on 2025-07-22, 23:36

jakethompson1 Offline

Rank l33t

Rank: l33t
Posts: 2032
Joined: 2015-11-17, 04:16

To achieve 2-1-1-1 & 0 W/S cache together with VLB required replacing the 15 ns "CE" tag RAM with a 15 ns UMC one; see discussion at Re: Configuring two VLB cards on a 486 vesa local bus

Speedsys:

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The attachment sstimg02.png is no longer available

Cachechk:

1 CACHECHK v4 2/7/96  Copyright (c) 1995 by Ray Van Tassle. (-h for help)
2 CMOS reports: conv_mem= 640K, ext_mem= 15,360K, Total RAM= 16,000K
3 "UMC UMC UMC "  486 Clocked at 715.9 MHz
4 Reading from memory.  
5 MegaByte#:      --------- Memory Access Block sizes (KB)-----
6       1    2    4    8   16   32   64  128  256  512 1024 2048 4096 <-- KB
7 0:   13   13   13   13   21   21   21   21   21   32   --   --   --    µs/KB
8 2:   13   13   13   13   21   21   21   21   21   32   32   32   32    µs/KB
9 3  4  5  6  7  8  9 10 11 12 13 14 15  <--- same as above.
10
11 Extra tests----
12 Wrt  27   27   27   27   27   27   27   27   27   27   27   27   27<-Write mem
13 This machine seems to have both L1 and L2 cache. [read]
14    L1 cache is   8KB --  83.8 MB/s  12.5 ns/byte  (240%) (162%)  34.2 clks
15    L2 cache is 256KB --  51.6 MB/s  20.3 ns/byte  (147%) (100%)  55.5 clks
16    Main memory speed --  34.9 MB/s  30.1 ns/byte  (100%) [read]  82.1 clks
17    Effective RAM access time (read ) is 120ns (a RAM bank is 4 bytes wide). 
18    Effective RAM access time (write) is 102ns (a RAM bank is 4 bytes wide). 
19    "UMC UMC UMC "  486 Clocked at 715.9 MHz.  Cache ENABLED.
20 Options: -t0

dooms -timedemo demo3: 2134 gametics in 3291 realtics

Topbench:

1                             The current system...                              
2 SCORE: 237   MemTest:   MemEA:     Opcodes:   VidMem:    3DGames:   Total:     
3              69 µsec    22 µsec    24 µsec    90 µsec    22 µsec    227 µsec   
4                                                                                
5          ...most closely matches the following entry in the database:          
6                      TEX's Socket 7 DOS machine [100MHz]                       
7                                AMD Am5x86 Clone                                
8                      Gateway 2000 4DX-33V with Turbochip                       
9                                                                                
10╔═══════════════════════════ Matched system detail: ═══════════════════════════╗
11║SCORE: 236   MemTest:   MemEA:     Opcodes:   VidMem:    3DGames:   Total:    ║
12║             48 µsec    25 µsec    20 µsec    139 µsec   15 µsec    247 µsec  ║
13║CPU: AMD 5x86 P75 (Am5x86) @ 120 MHz                                          ║
14║Video Adapter: VGA (VGA, Tseng ET 4000W32i, DRAM, VESA, 1MB Video Memory)     ║
15║Submitter: High Treason (HighTreason610)                                      ║
16║BIOS Info:                                                                    ║
17║Copyright (C) 1984-95, Award Software, Inc. (02/28/95, rev. 0)                ║
18║                                                                              ║
19║Description:                                                                  ║
20║UM8498F, 256KB L2, 16 MB EDO. CPU Rated for 133, CPU Unsupported by MOBO      ║
21║though 150MHz is attainable.                                                  ║
22║                                                                              ║
23║                                                                              ║
24╚══════════════════════════════════════════════════════════════════════════════╝
25Adjust your machine or emulator to see the results change realtime.  ESC exits.