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Update mov_MEM_FAC1 and get_FAC1_via_INDEX

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Rikard Nordgren authored and FeralChild64 committed 2026-01-28 21:26:20 +01:00
1 parent b95e09e6ac
commit 39763ef733
4 files changed
+13 -4
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STATUS.md
+2 -2
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@@ -221,8 +221,8 @@ Floating point mathematical routines - not official, but well known and broadly
| `$BAFE` | `div10_FAC1_p` | DONE | | | `$BAFE` | `div10_FAC1_p` | DONE | |
| `$BB0F` | `div_MEM_FAC1` | DONE | | | `$BB0F` | `div_MEM_FAC1` | DONE | |
| `$BB12` | `div_FAC2_FAC1` | DONE | | | `$BB12` | `div_FAC2_FAC1` | DONE | |
| `$BBA2` | `mov_MEM_FAC1` | DONE | | | `$BBA2` | `mov_MEM_FAC1` | DONE | From the Microsoft BASIC, original name: MOVFM |
| `$BBA6` | `get_FAC1_via_INDEX` | DONE | | | `$BBA6` | `get_FAC1_via_INDEX` | DONE | From the Microsoft BASIC, no label |
| `$BBC7` | `mov_r_FAC1_TMP2` | DONE | From the Microsoft BASIC, original name: MOV2F | | `$BBC7` | `mov_r_FAC1_TMP2` | DONE | From the Microsoft BASIC, original name: MOV2F |
| `$BBCA` | `mov_r_FAC1_TMP1` | DONE | From the Microsoft BASIC, original name: MOV1F | | `$BBCA` | `mov_r_FAC1_TMP1` | DONE | From the Microsoft BASIC, original name: MOV1F |
| `$BBD0` | `mov_r_FAC1_VAR` | DONE | From the Microsoft BASIC, original name: MOVVF | | `$BBD0` | `mov_r_FAC1_VAR` | DONE | From the Microsoft BASIC, original name: MOVVF |
src/basic/math_mov/bba2.mov_MEM_FAC1.s
+5 -1
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@@ -3,9 +3,13 @@
;; #LAYOUT# * BASIC_0 #TAKE ;; #LAYOUT# * BASIC_0 #TAKE
;; #LAYOUT# * * #IGNORE ;; #LAYOUT# * * #IGNORE
; This file is under the MIT license, it contains code released by Microsoft Corporation.
; See LICENSE for more information.
; Math package - fetch FAC1 from RAM location ; Math package - fetch FAC1 from RAM location
; ;
; This is verified to be identical to the original Microsoft implementation where it was named MOVFM.
;
; Input: ; Input:
; - .A - address low byte ; - .A - address low byte
; - .Y - address high byte ; - .Y - address high byte
@@ -24,7 +28,7 @@
mov_MEM_FAC1: mov_MEM_FAC1:
sty INDEX+1
sta INDEX+0 sta INDEX+0
sty INDEX+1
; FALLTHROUGH to get_FAC1_via_INDEX ; FALLTHROUGH to get_FAC1_via_INDEX
src/basic/math_mov/bba6.get_FAC1_via_INDEX.s
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@@ -3,6 +3,11 @@
;; #LAYOUT# * BASIC_0 #TAKE ;; #LAYOUT# * BASIC_0 #TAKE
;; #LAYOUT# * * #IGNORE ;; #LAYOUT# * * #IGNORE
; This file is under the MIT license, it contains code released by Microsoft Corporation.
; See LICENSE for more information.
;
; This is verified to be identical to the original Microsoft implementation where it was part of MOVFM.
;
; Math package - Mov MEM to FAC1 with address in INDEX zero page register ; Math package - Mov MEM to FAC1 with address in INDEX zero page register
; ;
; See also: ; See also:
tools/similarity.c
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@@ -24,7 +24,7 @@ int phase_mask[MAX_SIZE+MAX_SIZE];
// Pairs of start, end memory addresses of known exact similarity with the open source Microsoft BASIC // Pairs of start, end memory addresses of known exact similarity with the open source Microsoft BASIC
unsigned short microsoft_basic_chunks[NUM_CHUNKS * 2] = { unsigned short microsoft_basic_chunks[NUM_CHUNKS * 2] = {
0xB849, 0xB84F, 0xB849, 0xB84F,
0xBBC7, 0xBC1A 0xBBA2, 0xBC1A
}; };